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128-39-2

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  • China Biggest factory Manufacturer Supply High Quality 2,6-Di-tert-butylphenol CAS 128-39-2

    Cas No: 128-39-2

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128-39-2 Usage

Chemical Properties

white solid

Uses

Different sources of media describe the Uses of 128-39-2 differently. You can refer to the following data:
1. Antioxidant for Gasoline, Jet Fuels, and Electrical Insulating Oils
2. Antioxidant Intermediate, Pharmaceuticals
3. Widely used as antioxidant in fuels, lubricants and polymers. Employed as a synthetic intermediate for the production of higher molecular weight phenolic antioxidants. Used as an oxidation inhibitor and stabilizer (e.g. for fuel, oil and gasoline) and also used in plastics and rubber. Also applied as an intermediate and an antioxidant in aviation gasoline.

General Description

Odorless colorless to light yellow solid or liquid. Floats on water. Freezing point is 97°F.

Air & Water Reactions

Insoluble in water.

Reactivity Profile

Phenols, such as 2,6-Di-tert-butylphenol, do not behave as organic alcohols, as one might guess from the presence of a hydroxyl (-OH) group in their structure. Instead, they react as weak organic acids. Phenols and cresols are much weaker as acids than common carboxylic acids (phenol has Ka = 1.3 x 10^[-10]). These materials are incompatible with strong reducing substances such as hydrides, nitrides, alkali metals, and sulfides. Flammable gas (H2) is often generated, and the heat of the reaction may ignite the gas. Heat is also generated by the acid-base reaction between phenols and bases. Such heating may initiate polymerization of the organic compound. Phenols are sulfonated very readily (for example, by concentrated sulfuric acid at room temperature). The reactions generate heat. Phenols are also nitrated very rapidly, even by dilute nitric acid.

Health Hazard

Irritates eyes and (on prolonged contact) skin. Ingestion causes irritation of mouth and stomach.

Flammability and Explosibility

Nonflammable

Purification Methods

Crystallise the phenol from aqueous EtOH or n-hexane. [Beilstein 6 III 2061.]

Check Digit Verification of cas no

The CAS Registry Mumber 128-39-2 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 1,2 and 8 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 128-39:
(5*1)+(4*2)+(3*8)+(2*3)+(1*9)=52
52 % 10 = 2
So 128-39-2 is a valid CAS Registry Number.
InChI:InChI=1/C14H22O.K/c1-13(2,3)10-8-7-9-11(12(10)15)14(4,5)6;/h7-9,15H,1-6H3;/q;+1/p-1

128-39-2 Well-known Company Product Price

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  • Alfa Aesar

  • (A17244)  2,6-Di-tert-butylphenol, 98%   

  • 128-39-2

  • 250g

  • 164.0CNY

  • Detail
  • Alfa Aesar

  • (A17244)  2,6-Di-tert-butylphenol, 98%   

  • 128-39-2

  • 1000g

  • 407.0CNY

  • Detail
  • Alfa Aesar

  • (A17244)  2,6-Di-tert-butylphenol, 98%   

  • 128-39-2

  • 5000g

  • 1616.0CNY

  • Detail

128-39-2SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 10, 2017

Revision Date: Aug 10, 2017

1.Identification

1.1 GHS Product identifier

Product name 2,6-Di-tert-butylphenol

1.2 Other means of identification

Product number -
Other names Phenol, 2,6-bis(1,1-dimethylethyl)-

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only. Fuels and fuel additives,Intermediates,Lubricants and lubricant additives,Oxidizing/reducing agents
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:128-39-2 SDS

128-39-2Synthetic route

tert-butyl (2,6-di-tert-butylphenyl)carbonate
95932-29-9

tert-butyl (2,6-di-tert-butylphenyl)carbonate

2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

Conditions
ConditionsYield
With hydrogenchloride In 1,4-dioxane for 3h; Product distribution; Heating; deprotection;89%
3,5-Di-tert-butyl-4-hydroxybenzoic acid
1421-49-4

3,5-Di-tert-butyl-4-hydroxybenzoic acid

2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

Conditions
ConditionsYield
With decarboxylase at 25℃; for 15h; pH=6.5; Enzymatic reaction;84.1%
2,6-di-tert-butyl-anisole
1516-95-6

2,6-di-tert-butyl-anisole

2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

Conditions
ConditionsYield
With lithium; ethylenediamine In tetrahydrofuran at -10℃; for 0.5h;82%
tert-butyl alcohol
75-65-0

tert-butyl alcohol

phenol
108-95-2

phenol

A

para-tert-butylphenol
98-54-4

para-tert-butylphenol

B

2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

C

2-tert-Butylphenol
88-18-6

2-tert-Butylphenol

Conditions
ConditionsYield
With aluminium(III) phenoxide In various solvent(s) at 130℃; for 2h;A 9.4%
B 1.8%
C 70.4%
4-bromo-2,6-di-tert-butylphenol
1139-52-2

4-bromo-2,6-di-tert-butylphenol

bicyclo[2.2.1]hepta-2,5-diene
121-46-0

bicyclo[2.2.1]hepta-2,5-diene

A

2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

exo-2,6-di-tert-butyl-4-(bicyclo[2.2.1]hept-5-en-2-yl)phenol

exo-2,6-di-tert-butyl-4-(bicyclo[2.2.1]hept-5-en-2-yl)phenol

Conditions
ConditionsYield
With ammonium formate; palladium diacetate; triphenylphosphine In N,N-dimethyl-formamide at 90℃; for 24h; Heck Reaction; Schlenk technique; Inert atmosphere;A 20%
B 68%
isobutene
115-11-7

isobutene

phenol
108-95-2

phenol

A

para-tert-butylphenol
98-54-4

para-tert-butylphenol

B

2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

C

t-butyl phenyl ether
6669-13-2

t-butyl phenyl ether

D

2-tert-Butylphenol
88-18-6

2-tert-Butylphenol

E

2,4-di-tert-Butylphenol
96-76-4

2,4-di-tert-Butylphenol

Conditions
ConditionsYield
2-phenoxy-1,2-thialuminolane at 110℃; for 3h; Product distribution; Mechanism; other catalysts, other time, other temperature;A 1.23%
B 4.97%
C 0.8%
D 66.67%
E 2.37%
isobutene
115-11-7

isobutene

phenol
108-95-2

phenol

A

2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

B

t-butyl phenyl ether
6669-13-2

t-butyl phenyl ether

C

2-tert-Butylphenol
88-18-6

2-tert-Butylphenol

D

2,4-di-tert-Butylphenol
96-76-4

2,4-di-tert-Butylphenol

Conditions
ConditionsYield
2-phenooxy-1,2-thialuminolane at 110℃; for 3h; Further byproducts given;A 4.97%
B 0.8%
C 66.67%
D 2.37%
C23H26N2*BF4(1-)*H(1+)

C23H26N2*BF4(1-)*H(1+)

potassium 2,6-di-tert-butylphenolate
24676-69-5

potassium 2,6-di-tert-butylphenolate

A

2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

B

4-(bis(1,2,5,6-tetrahydro-4H-pyrrolo[3,2,1-ij]quinolin-8-yl)-methyl)-2,6-di-tert-butylphenol

4-(bis(1,2,5,6-tetrahydro-4H-pyrrolo[3,2,1-ij]quinolin-8-yl)-methyl)-2,6-di-tert-butylphenol

Conditions
ConditionsYield
Stage #1: C23H26N2*BF4(1-)*H(1+); potassium 2,6-di-tert-butylphenolate In dimethyl sulfoxide for 0.0166667h;
Stage #2: With ammonium hydroxide In dimethyl sulfoxide pH=10;
A 26%
B 64%
carbon dioxide
124-38-9

carbon dioxide

2,6-di-tert-butyl-anisole
1516-95-6

2,6-di-tert-butyl-anisole

A

2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

B

1,3-di-tert-butylbenzene
1014-60-4

1,3-di-tert-butylbenzene

C

2,6-di-tert-butylbenzoic acid
253584-86-0

2,6-di-tert-butylbenzoic acid

Conditions
ConditionsYield
Stage #1: 2,6-di-tert-butyl-anisole With 4,4'-di-tert-butylbiphenyl; lithium In tetrahydrofuran at 20℃; for 1.55h; Inert atmosphere;
Stage #2: carbon dioxide In tetrahydrofuran for 0.5h; Heating;
A 7%
B 30%
C 63%
4-bromo-2,6-di-tert-butyl-2,5-cyclohexadienone
950-57-2

4-bromo-2,6-di-tert-butyl-2,5-cyclohexadienone

A

2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

B

2,6-Di-tert-butyl-1,4-benzoquinone
719-22-2

2,6-Di-tert-butyl-1,4-benzoquinone

C

3,5,3',5'-tetra-tert-butyl-4,4'-diphenoquinone
2455-14-3

3,5,3',5'-tetra-tert-butyl-4,4'-diphenoquinone

D

2,6-Di-tert-butyl-4-iodophenol
40084-31-9

2,6-Di-tert-butyl-4-iodophenol

E

4-bromo-2,6-di-tert-butylphenol
1139-52-2

4-bromo-2,6-di-tert-butylphenol

F

2,6-Di-t-butyl-4-methoxyphenol
489-01-0

2,6-Di-t-butyl-4-methoxyphenol

Conditions
ConditionsYield
With iodine In methanol; water at 35℃; for 0.0833333h; Product distribution;A 5%
B 18%
C 7%
D 1%
E 62%
F 6%
tert-butyl alcohol
75-65-0

tert-butyl alcohol

phenol
108-95-2

phenol

A

para-tert-butylphenol
98-54-4

para-tert-butylphenol

B

2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

C

2-tert-Butylphenol
88-18-6

2-tert-Butylphenol

D

2,4-di-tert-Butylphenol
96-76-4

2,4-di-tert-Butylphenol

Conditions
ConditionsYield
With carbon tetrabromide at 175℃; for 6h; Sealed tube;A 33%
B 3%
C 9%
D 49%
With 3-methyl-1-(4-sulfobutyl)imidazol-3-ium methanesulfonate at 70℃; for 2h; Temperature; Sealed tube;
With 1-(4-sulfonic acid)butylpyridinium methane sulfonate at 80℃; for 2h; Reagent/catalyst; Sealed tube;
With N-(4-sulfonic acid)butyl triethylammonium methane sulfonate at 80℃; for 2h; Catalytic behavior; Kinetics; Temperature; Reagent/catalyst; Sealed tube;
tertiary butyl chloride
507-20-0

tertiary butyl chloride

ortho-isobornylphenol
4518-00-7, 51317-52-3, 23658-96-0

ortho-isobornylphenol

A

2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

B

2,4-di-tert-butyl-6-(1,7,7-trimethylbicyclo[2.2.1]hept-2-yl)phenol

2,4-di-tert-butyl-6-(1,7,7-trimethylbicyclo[2.2.1]hept-2-yl)phenol

C

2-tert-butyl-6-(1,7,7-trimethylbicyclo[2.2.1]hept-2-yl)phenol

2-tert-butyl-6-(1,7,7-trimethylbicyclo[2.2.1]hept-2-yl)phenol

D

2-tert-butyl-6-(2,3,3-trimethylbicyclo[2.2.1]hept-5-yl)phenol

2-tert-butyl-6-(2,3,3-trimethylbicyclo[2.2.1]hept-5-yl)phenol

Conditions
ConditionsYield
With montmorillonite KSF In dichloromethane for 5h; Reflux;A 7%
B 32%
C 48%
D n/a
tert-butyl alcohol
75-65-0

tert-butyl alcohol

phenol
108-95-2

phenol

A

para-tert-butylphenol
98-54-4

para-tert-butylphenol

B

2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

C

2-tert-Butylphenol
88-18-6

2-tert-Butylphenol

D

2,4-di-tert-Butylphenol
96-76-4

2,4-di-tert-Butylphenol

E

2,4,6-tri-tert-butylphenoxol
732-26-3

2,4,6-tri-tert-butylphenoxol

Conditions
ConditionsYield
With carbon tetrabromide at 150℃; for 6h; Sealed tube;A 9%
B 10%
C 20%
D 39%
E 14%
With carbon tetrabromide at 175℃; for 6h; Sealed tube;A 6%
B 13%
C 16%
D 34%
E 25%
With tetrachloromethane at 175℃; for 6h; Sealed tube;A 17%
B 4%
C 21%
D 23%
E 7%
With Bromoform at 175℃; for 6h; Sealed tube;A 21%
B 1%
C 21%
D 22%
E 1%
3,5-di-tert-butyl-4-hydroxybenzyl alcohol
88-26-6

3,5-di-tert-butyl-4-hydroxybenzyl alcohol

2-pentyl-4,6-bis-trichloromethyl-[1,3,5]triazine
24481-37-6

2-pentyl-4,6-bis-trichloromethyl-[1,3,5]triazine

A

2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

B

4,4'-Methylenebis(2,6-di-tert-butylphenol)
118-82-1

4,4'-Methylenebis(2,6-di-tert-butylphenol)

C

2,6-Di-tert-butyl-4-(4-pentyl-6-trichloromethyl-[1,3,5]triazin-2-yloxymethyl)-phenol
119294-34-7

2,6-Di-tert-butyl-4-(4-pentyl-6-trichloromethyl-[1,3,5]triazin-2-yloxymethyl)-phenol

Conditions
ConditionsYield
With triethylamine In 1,4-dioxane at 60℃; for 4h;A 0.55 g
B 0.35 g
C 38%
3,5-di-tert-butyl-4-hydroxybenzyl alcohol
88-26-6

3,5-di-tert-butyl-4-hydroxybenzyl alcohol

A

2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

B

4,4'-Methylenebis(2,6-di-tert-butylphenol)
118-82-1

4,4'-Methylenebis(2,6-di-tert-butylphenol)

C

2,6-Di-tert-butyl-4-(4-phenyl-6-trichloromethyl-[1,3,5]triazin-2-yloxymethyl)-phenol
119294-35-8

2,6-Di-tert-butyl-4-(4-phenyl-6-trichloromethyl-[1,3,5]triazin-2-yloxymethyl)-phenol

Conditions
ConditionsYield
With 2-phenyl-4,6-bis-trichloromethyl-[1,3,5]triazine; triethylamine In 1,4-dioxane at 60℃; for 4h;A 0.55 g
B 0.35 g
C 32%
3,5-di-tert-butyl-4-hydroxybenzyl alcohol
88-26-6

3,5-di-tert-butyl-4-hydroxybenzyl alcohol

2-phenyl-4,6-bis-trichloromethyl-[1,3,5]triazine
24504-22-1

2-phenyl-4,6-bis-trichloromethyl-[1,3,5]triazine

A

2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

B

4,4'-Methylenebis(2,6-di-tert-butylphenol)
118-82-1

4,4'-Methylenebis(2,6-di-tert-butylphenol)

C

2,6-Di-tert-butyl-4-(4-phenyl-6-trichloromethyl-[1,3,5]triazin-2-yloxymethyl)-phenol
119294-35-8

2,6-Di-tert-butyl-4-(4-phenyl-6-trichloromethyl-[1,3,5]triazin-2-yloxymethyl)-phenol

Conditions
ConditionsYield
With triethylamine In 1,4-dioxane at 60℃; for 4h;A 0.55 g
B 0.35 g
C 32%
dioxomolybdenum(VI) dichloride
13637-68-8

dioxomolybdenum(VI) dichloride

lithium 2,6-di-tert-butylphenolate
55894-67-2

lithium 2,6-di-tert-butylphenolate

A

MoO2(O-2,6-t-Bu2C6H3)2*HO-2,6-t-Bu2C6H3

MoO2(O-2,6-t-Bu2C6H3)2*HO-2,6-t-Bu2C6H3

B

2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

C

3,5,3',5'-tetra-tert-butyl-4,4'-diphenoquinone
2455-14-3

3,5,3',5'-tetra-tert-butyl-4,4'-diphenoquinone

Conditions
ConditionsYield
In acetonitrile MoO2Cl2 soln. in CH3CN was added to LiO(2,6-t-Bu2C6H3) soln. in CH3CN and mixt. was stirred for 1 h; solvent was removed in vacuo, solved in pentane, filtered and placed in-35°C freezer for 2 days; elem. anal.;A 31%
B n/a
C n/a
2,6-di-tert-butyl-4-methyl-phenol
128-37-0

2,6-di-tert-butyl-4-methyl-phenol

phenol
108-95-2

phenol

A

p-cresol
106-44-5

p-cresol

B

para-tert-butylphenol
98-54-4

para-tert-butylphenol

C

2-tert-Butyl-4-methylphenol
2409-55-4

2-tert-Butyl-4-methylphenol

D

2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

E

2-tert-Butylphenol
88-18-6

2-tert-Butylphenol

F

2,4-di-tert-Butylphenol
96-76-4

2,4-di-tert-Butylphenol

Conditions
ConditionsYield
C24H20ClNbO4 at 140℃; for 3h; Product distribution; Rate constant; Mechanism; also with 2-methylphenol, other catalysts, other products;A 14%
B 8%
C 30.5%
D 2%
E 20%
F 15%
2,6-di-tert-butyl-4-diazo-2,5-cyclohexadien-1-one
955-02-2

2,6-di-tert-butyl-4-diazo-2,5-cyclohexadien-1-one

A

2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

B

3,5,3',5'-tetra-tert-butyl-4,4'-diphenoquinone
2455-14-3

3,5,3',5'-tetra-tert-butyl-4,4'-diphenoquinone

C

4,4'-dihydroxy-3,3',5,5'-tetra-tert-butylbiphenyl
128-38-1

4,4'-dihydroxy-3,3',5,5'-tetra-tert-butylbiphenyl

D

2,6-di-tert-butyl-4-pyridiniophenolate

2,6-di-tert-butyl-4-pyridiniophenolate

Conditions
ConditionsYield
With cyclohexane In pyridine for 3h; Heating; Further byproducts given. Title compound not separated from byproducts;A n/a
B n/a
C n/a
D 29%
ethanol
64-17-5

ethanol

benzene-1,2-diol
120-80-9

benzene-1,2-diol

A

2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

B

2,4-diisopropylphenol
2934-05-6

2,4-diisopropylphenol

C

2,5-diethyl phenol
876-20-0

2,5-diethyl phenol

Conditions
ConditionsYield
With perrhenic acid anhydride at 320℃; for 6h; Inert atmosphere; Sealed tube;A 5.8%
B 10.1%
C 5.2%
((CH3)3SiCH2)2Ta(CSi(CH3)3)2Ta(OC6H3(C4H9)2)2
106040-32-8

((CH3)3SiCH2)2Ta(CSi(CH3)3)2Ta(OC6H3(C4H9)2)2

A

tetramethylsilane
75-76-3

tetramethylsilane

B

Ta(OC6H3-t-BuCMe2CH2)2(CH2SiMe3)
83830-98-2

Ta(OC6H3-t-BuCMe2CH2)2(CH2SiMe3)

C

2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

Conditions
ConditionsYield
In (2)H8-toluene heated at 150°C in a sealed NMR tube for 5-10 h; not isolated ((1)H NMR data); yield of the cyclometallated complex increases when thermolysis is carried out in the presence of 2 or more equiv of 2,6-t-Bu2C6H3OH;A n/a
B 5%
C n/a
4-chloro-2,6-di-tert-butylphenol
4096-72-4

4-chloro-2,6-di-tert-butylphenol

2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

Conditions
ConditionsYield
With sodium hydroxide; aluminum nickel; ethanol
4-bromo-2,6-di-tert-butylphenol
1139-52-2

4-bromo-2,6-di-tert-butylphenol

2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

Conditions
ConditionsYield
With sodium hydroxide; aluminum nickel; ethanol
With ammonia; potassium
isobutene
115-11-7

isobutene

phenol
108-95-2

phenol

2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

Conditions
ConditionsYield
With aluminium(III) phenoxide
With aluminium(III) phenoxide
tert-butyl alcohol
75-65-0

tert-butyl alcohol

phenol
108-95-2

phenol

2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

Conditions
ConditionsYield
With aluminium(III) phenoxide
2-tert-Butylphenol
88-18-6

2-tert-Butylphenol

2,4,6-tri-tert-butylphenoxol
732-26-3

2,4,6-tri-tert-butylphenoxol

A

2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

B

2,4-di-tert-Butylphenol
96-76-4

2,4-di-tert-Butylphenol

Conditions
ConditionsYield
sulfuric acid at 110℃; for 4h; Equilibrium constant; Product distribution; other temperature, other time;
at 80 - 180℃; Equilibrium constant;
2-tert-Butylphenol
88-18-6

2-tert-Butylphenol

A

2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

B

phenol
108-95-2

phenol

Conditions
ConditionsYield
sulfuric acid at 180℃; for 7h; Equilibrium constant; Product distribution; other catalysis, other temperature, other time;
2,6-Di-tert-butyl-1,4-benzoquinone
719-22-2

2,6-Di-tert-butyl-1,4-benzoquinone

A

2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

B

3,5,3',5'-tetra-tert-butyl-4,4'-diphenoquinone
2455-14-3

3,5,3',5'-tetra-tert-butyl-4,4'-diphenoquinone

Conditions
ConditionsYield
With oxygen; N-(2-aminoethyl)-N'-{2-[(2-aminoethyl)amino]ethyl}ethane-1,2-diamine In methanol; water at 35℃; Equilibrium constant; Mechanism; Rate constant; other catalysts are also investigated;
3,5,3',5'-tetra-tert-butyl-4,4'-diphenoquinone
2455-14-3

3,5,3',5'-tetra-tert-butyl-4,4'-diphenoquinone

A

2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

B

2,6-Di-tert-butyl-1,4-benzoquinone
719-22-2

2,6-Di-tert-butyl-1,4-benzoquinone

Conditions
ConditionsYield
With oxygen; N-(2-aminoethyl)-N'-{2-[(2-aminoethyl)amino]ethyl}ethane-1,2-diamine In methanol; water at 35℃; Equilibrium constant; Mechanism; Rate constant; other catalysts are also investigated;
2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

3,5,3',5'-tetra-tert-butyl-4,4'-diphenoquinone
2455-14-3

3,5,3',5'-tetra-tert-butyl-4,4'-diphenoquinone

Conditions
ConditionsYield
With potassium hydroxide; iodine In methanol for 0.25h;100%
With 2,2,6,6-tetramethylpiperidine-1-oxoammonium tetrafluoroborate; potassium hydrogencarbonate In water; acetonitrile for 1h;100%
With oxygen; pyridine; copper(I) In methanol at 60℃; for 6h;100%
2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

2,6-Di-tert-butyl-4-iodophenol
40084-31-9

2,6-Di-tert-butyl-4-iodophenol

Conditions
ConditionsYield
With bis(2,4,6-trimethylpyridine)iodine(I) hexafluorophosphate In dichloromethane for 0.0833333h; Ambient temperature;100%
With tetrabutylammomium bromide; iodine; oxygen; copper(II) nitrate In water at 80℃; under 760.051 Torr; for 6h; Green chemistry; regioselective reaction;89%
With aluminum oxide; periodic acid In 1,4-dioxane for 3h; Heating;78%
2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

2,6-Di-tert-butyl-1,4-benzoquinone
719-22-2

2,6-Di-tert-butyl-1,4-benzoquinone

Conditions
ConditionsYield
With pyridine; oxygen; Co(babp) In toluene at 20℃; under 760 Torr; for 24h; Mechanism; Product distribution; other reaction temperatures and times, without solvent, with 4-methylpyridine, 4-(dimethylamino)pyridine or 1-azabicyclo<2.2.2>octane, re-use of catalyst;100%
With pyridine; oxygen; Co(babp) In toluene at 20℃; under 760 Torr; for 24h;100%
With cobalt(II); oxygen In N,N-dimethyl-formamide for 1h;100%
2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

[6-Hydroxy-2,7,8-trimethyl-2-(4,8,12-trimethyltridecyl)chroman-5-yl]methyl bromide
187806-29-7

[6-Hydroxy-2,7,8-trimethyl-2-(4,8,12-trimethyltridecyl)chroman-5-yl]methyl bromide

5a-(3,5-di-tert-butyl-4-hydroxy-phenyl)-α-tocopherol

5a-(3,5-di-tert-butyl-4-hydroxy-phenyl)-α-tocopherol

Conditions
ConditionsYield
With hydrogen bromide; zinc(II) chloride In hexane; dichloromethane at 50℃; for 4h;100%
Sm(OC(=C6H6)Ph)2(O-C6H2-(t)Bu2-2,6-Me-4)(hexamethylphosphoramide)2
159281-61-5

Sm(OC(=C6H6)Ph)2(O-C6H2-(t)Bu2-2,6-Me-4)(hexamethylphosphoramide)2

2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

Sm(OC(=C6H6)Ph)2(O-C6H3-(t)Bu2-2,6)(hexamethylphosphoramide)2
159281-62-6

Sm(OC(=C6H6)Ph)2(O-C6H3-(t)Bu2-2,6)(hexamethylphosphoramide)2

Conditions
ConditionsYield
In benzene Ar or N2-atmosphere; 2 equivs. of phenol;100%
2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

C14H21Cl3OTe
1222630-25-2

C14H21Cl3OTe

Conditions
ConditionsYield
With tellurium tetrachloride In tetrachloromethane at 0 - 20℃; for 2h;100%
With tellurium tetrachloride In tetrachloromethane at 0 - 20℃; for 2h;
2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

(N-((6E)-6-(butylimino-κN)-1-cyclohexen-1-yl)-2,6-bis(1-methylethyl)benzenaminato-κN)trimethylhafnium

(N-((6E)-6-(butylimino-κN)-1-cyclohexen-1-yl)-2,6-bis(1-methylethyl)benzenaminato-κN)trimethylhafnium

(2,6-bis(1,1-dimethylethyl)phenolate)(N-((6E)-6-(butylimino-kappaN)-1-cyclohexen-1-yl)-2,6-bis(1-methylethyl)benzenaminato-kappaN)dimethyl-hafnium

(2,6-bis(1,1-dimethylethyl)phenolate)(N-((6E)-6-(butylimino-kappaN)-1-cyclohexen-1-yl)-2,6-bis(1-methylethyl)benzenaminato-kappaN)dimethyl-hafnium

Conditions
ConditionsYield
In benzene-d6 at 24℃; for 18h;100%
2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

[N-[6-(butylimino-κN)-1-cyclohexen-1-yl]-2,6-bis(1-methylethyl)benzenaminato-κN]trimethylzirconium

[N-[6-(butylimino-κN)-1-cyclohexen-1-yl]-2,6-bis(1-methylethyl)benzenaminato-κN]trimethylzirconium

[2,6-Bis(1,1-dimethylethyl)phenolato][N-[6-(butylimino-κN)-1-cyclohexen-1-yl]-2,6-bis(1-methylethyl)benzenaminato-κN]dimethylzirconium

[2,6-Bis(1,1-dimethylethyl)phenolato][N-[6-(butylimino-κN)-1-cyclohexen-1-yl]-2,6-bis(1-methylethyl)benzenaminato-κN]dimethylzirconium

Conditions
ConditionsYield
In hexane at 20℃;100%
2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

[N-[6-(butylimino-κN)-1-cyclohexen-1-yl]-2,6-bis(1-methylethyl)benzenaminato-κN]trimethylhafnium

[N-[6-(butylimino-κN)-1-cyclohexen-1-yl]-2,6-bis(1-methylethyl)benzenaminato-κN]trimethylhafnium

[2,6-Bis(1,1-dimethylethyl)phenolato][N-[6-(butylimino-κN)-1-cyclohexen-1-yl]-2,6-bis(1-methylethyl)benzenaminato-κN]dimethylhafnium

[2,6-Bis(1,1-dimethylethyl)phenolato][N-[6-(butylimino-κN)-1-cyclohexen-1-yl]-2,6-bis(1-methylethyl)benzenaminato-κN]dimethylhafnium

Conditions
ConditionsYield
In toluene at 20℃; for 18h;100%
trimethylsilyl isothiocyanate
2290-65-5

trimethylsilyl isothiocyanate

2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

3,5-di-tert-butyl-4-hydroxyphenylthiocyanate
3957-71-9

3,5-di-tert-butyl-4-hydroxyphenylthiocyanate

Conditions
ConditionsYield
With 1-chloro-1λ3-benzo[d][1,2]iodaoxol-3(1H)-one In dichloromethane at 20℃; for 1h;100%
2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

2,4,6-tris(chloromethyl)-mesitylene
3849-01-2

2,4,6-tris(chloromethyl)-mesitylene

1,3,5-trimethyl-2,4,6-tris-(3,5-di-tert-butyl-4-hydroxybenzyl)benzene
1709-70-2

1,3,5-trimethyl-2,4,6-tris-(3,5-di-tert-butyl-4-hydroxybenzyl)benzene

Conditions
ConditionsYield
With hydrogenchloride; 15-crown-5; 3,4,7,8-Tetramethyl-o-phenanthrolin; cadmium(II) iodide; ytterbium(III) triflate In tetrachloromethane; water at 50℃; for 10h; Catalytic behavior; Concentration; Reagent/catalyst; Temperature; Solvent;99.5%
2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

4,4'-dihydroxy-3,3',5,5'-tetra-tert-butylbiphenyl
128-38-1

4,4'-dihydroxy-3,3',5,5'-tetra-tert-butylbiphenyl

Conditions
ConditionsYield
Stage #1: 2,6-di-tert-butylphenol With oxygen In tert-butyl alcohol at 70℃; under 760.051 Torr; for 18h; Green chemistry;
Stage #2: With hydrogen In tert-butyl alcohol at 60℃; under 760.051 Torr; for 4h; Green chemistry;
99%
With CuCl(OH)*TMEDA In dichloromethane at 20℃; for 2h;96%
Stage #1: 2,6-di-tert-butylphenol In dichloromethane at 20℃; for 2h;
Stage #2: With sodium dithionite In ethanol for 2h; Heating;
96%
2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

potassium 2,6-di-tert-butylphenolate
24676-69-5

potassium 2,6-di-tert-butylphenolate

Conditions
ConditionsYield
With potassium hexamethylsilazane In tetrahydrofuran at 20℃; for 15h;99%
With potassium tert-butylate In ethanol for 0.25h;92%
With potassium hydroxide In 5,5-dimethyl-1,3-cyclohexadiene for 5h; Solvent; Reflux; Inert atmosphere;88.5%
With potassium hydroxide; potassium tert-butylate
2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

acrylic acid methyl ester
292638-85-8

acrylic acid methyl ester

methyl 3-(4-hydroxy-3,5-di-tert-butyl)phenylpropanoate
6386-38-5

methyl 3-(4-hydroxy-3,5-di-tert-butyl)phenylpropanoate

Conditions
ConditionsYield
Stage #1: 2,6-di-tert-butylphenol With tri-n-butyltin acetate; zinc(II) carbonate Inert atmosphere; Heating;
Stage #2: acrylic acid methyl ester at 70 - 90℃; for 1.5h; Inert atmosphere;
99%
With potassium tert-butylate 1) t-BuOH, 2) water, 116 deg C, 2 h; Yield given. Multistep reaction;
With potassium tert-butylate; water Mechanism; Rate constant; 1) t-BuOH, 2) 116 deg C; inhibiting effect of water;
d(4)-methanol
811-98-3

d(4)-methanol

2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

(4-(2)H)-2,6-Di-tert-butylphenol

(4-(2)H)-2,6-Di-tert-butylphenol

Conditions
ConditionsYield
With sodium methoxide-d3 at 50℃; for 24h; Methylation; Substitution;99%
2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

(salen(tBu,tBu)Sc(N(SiHMe2)2)
882070-98-6

(salen(tBu,tBu)Sc(N(SiHMe2)2)

(N,N'-bis(3,5-bis(tert-butyl)-2-oxy-benzylidene)-1,2-ethanediamine)(2,6-bis(tert-butyl)phenolato)scandium(III)
1131005-40-7

(N,N'-bis(3,5-bis(tert-butyl)-2-oxy-benzylidene)-1,2-ethanediamine)(2,6-bis(tert-butyl)phenolato)scandium(III)

Conditions
ConditionsYield
In hexane byproducts: HN(SiH(CH3)2)2; under Ar; phenol deriv. added to soln. of Sc complex in hexane, mixt. stirred for 2 h; evapd. under vac., crystd. from toluene; elem. anal.;99%
2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

[Sc(C6H10(NCHC6H2(C(CH3)3)2O)2)(N(SiH(CH3)2)2)]

[Sc(C6H10(NCHC6H2(C(CH3)3)2O)2)(N(SiH(CH3)2)2)]

(N,N'-bis(3,5-bis(tert-butyl)-2-oxo-benzylidene)-(1R,2R)-1,2-diaminocyclohexane)(2,6-bis(tert-butyl)phenolato)scandium(III)

(N,N'-bis(3,5-bis(tert-butyl)-2-oxo-benzylidene)-(1R,2R)-1,2-diaminocyclohexane)(2,6-bis(tert-butyl)phenolato)scandium(III)

Conditions
ConditionsYield
In hexane byproducts: HN(SiH(CH3)2)2; under Ar; phenol deriv. added to soln. of Sc complex in hexane, mixt. stirred for 2 h; evapd. under vac., crystd. from toluene; elem. anal.;99%
2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

4,4'-Dimethoxybenzhydrol
728-87-0

4,4'-Dimethoxybenzhydrol

4',4''-Dimethoxy-3,5-di-tert.-butyl-4-hydroxy-triphenylmethan
13391-91-8

4',4''-Dimethoxy-3,5-di-tert.-butyl-4-hydroxy-triphenylmethan

Conditions
ConditionsYield
With tris(pentafluorophenyl)borate In 1,2-dichloro-ethane at 60℃; for 4h; Green chemistry;99%
2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

6-bromo-2-pyrrolidinobenzaldehyde

6-bromo-2-pyrrolidinobenzaldehyde

C25H32BrNO

C25H32BrNO

Conditions
ConditionsYield
Stage #1: 2,6-di-tert-butylphenol; 6-bromo-2-pyrrolidinobenzaldehyde With piperidine In toluene at 120℃; for 12h;
Stage #2: In ethanol at 25℃; for 0.05h; Time;
99%
2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

2,4-bis(3,5-di-tert-butyl-4-hydroxyphenyl)-1,3,2,4-dithiadiphosphetane-2,4-disulfide
58851-58-4

2,4-bis(3,5-di-tert-butyl-4-hydroxyphenyl)-1,3,2,4-dithiadiphosphetane-2,4-disulfide

bis(3,5-di-t-butyl-4-hydroxyphenyl)phosphinodithioic acid
126551-81-3

bis(3,5-di-t-butyl-4-hydroxyphenyl)phosphinodithioic acid

Conditions
ConditionsYield
at 160℃;98.5%
1,1-Diphenylmethanol
91-01-0

1,1-Diphenylmethanol

2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

3,5-di-tert-butyl-4-hydroxyphenyldiphenylmethane
13145-54-5

3,5-di-tert-butyl-4-hydroxyphenyldiphenylmethane

Conditions
ConditionsYield
With tris(pentafluorophenyl)borate In 1,2-dichloro-ethane at 60℃; for 8h;98%
With tris(pentafluorophenyl)borate In 1,2-dichloro-ethane at 60℃; for 4h; Green chemistry;95%
With sulfuric acid In acetic acid
2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

3,5-di-tert-butyl-4-hydroxybenzenesulfonic acid
25679-39-4

3,5-di-tert-butyl-4-hydroxybenzenesulfonic acid

Conditions
ConditionsYield
With sulfur trioxide In nitromethane at 0℃; for 0.5h; Product distribution;98%
2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

1,1'-bis(4-oxo-3,5-di-t-butylcyclohexa)dienylidene

1,1'-bis(4-oxo-3,5-di-t-butylcyclohexa)dienylidene

Conditions
ConditionsYield
With oxygen; manganese(II); iron(III); magnesium oxide; copper In benzene for 24h; Product distribution; Ambient temperature;98%
With oxygen; manganese; magnesium oxide In benzene for 24h; Ambient temperature;98%
With manganese(III) triacetate dihydrate; sodium hydroxide In water; acetonitrile at 25℃; for 4h; Reagent/catalyst; Solvent; Time;94%
phthalimidesulfenyl chloride
54974-07-1

phthalimidesulfenyl chloride

2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

N-(3,5-Di-tert-butyl-4-hydroxyphenylthio)phthalimide

N-(3,5-Di-tert-butyl-4-hydroxyphenylthio)phthalimide

Conditions
ConditionsYield
In chloroform at 20℃; Substitution;98%
2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

4,4'-dimethylbenzhydrol
885-77-8

4,4'-dimethylbenzhydrol

3,5-ditertiary-butyl-4-hydroxyphenyldi-p-tolylmethane

3,5-ditertiary-butyl-4-hydroxyphenyldi-p-tolylmethane

Conditions
ConditionsYield
With tris(pentafluorophenyl)borate In 1,2-dichloro-ethane at 60℃; for 4h; Green chemistry;98%
With sulfuric acid; acetic acid
2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

1-(4-chlorophenyl)-3-phenylprop-2-yn-1-ol
102990-14-7

1-(4-chlorophenyl)-3-phenylprop-2-yn-1-ol

2,6-di-tert-butyl-4-[1-(4-chlorophenyl)-3-phenyl-2-propynyl]phenol

2,6-di-tert-butyl-4-[1-(4-chlorophenyl)-3-phenyl-2-propynyl]phenol

Conditions
ConditionsYield
With tin(ll) chloride In nitromethane at 40℃; for 0.166667h;98%
2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

2-methylbenzhydrol
5472-13-9

2-methylbenzhydrol

2,6-di-tert-butyl-4-(phenyl(o-tolyl)methyl)phenol

2,6-di-tert-butyl-4-(phenyl(o-tolyl)methyl)phenol

Conditions
ConditionsYield
With tris(pentafluorophenyl)borate In 1,2-dichloro-ethane at 60℃; for 4h; Green chemistry;98%
With sulfuric acid In dichloromethane at 0 - 25℃; for 0.333333h; Inert atmosphere; Schlenk technique;
2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

3-benzothienyl(phenyl)methanol
65628-41-3

3-benzothienyl(phenyl)methanol

C29H32OS

C29H32OS

Conditions
ConditionsYield
With tris(pentafluorophenyl)borate In 1,2-dichloro-ethane at 60℃; for 8h;98%
With tris(pentafluorophenyl)borate In 1,2-dichloro-ethane at 60℃; for 4h; Green chemistry;89%
4-cyano-2-pyrrolidinylbenzaldehyde

4-cyano-2-pyrrolidinylbenzaldehyde

1,1,1,3',3',3'-hexafluoro-propanol
920-66-1

1,1,1,3',3',3'-hexafluoro-propanol

2,6-di-tert-butylphenol
128-39-2

2,6-di-tert-butylphenol

C26H32N2O

C26H32N2O

Conditions
ConditionsYield
Stage #1: 4-cyano-2-pyrrolidinylbenzaldehyde; 2,6-di-tert-butylphenol With piperidine In toluene at 120℃; for 12h;
Stage #2: 1,1,1,3',3',3'-hexafluoro-propanol In ethanol at 25℃; for 0.833333h;
98%

128-39-2Related news

Complexes of organotin compounds with bis- and trisphosphonate derivatives of 2,6-Di-tert-butylphenol (cas 128-39-2) having antioxidant activity09/29/2019

Complexes of organotin compounds R2SnCl2 with bisand trisphosphonate derivatives of 2,6-di-tert-butyl-4-methylphenol (ionol) were synthesized. X-ray diffraction studies were carried out for some of them. The redox properties of the synthesized compounds were characterized by cyclic voltammetry. ...detailed

QSAR study of dual cyclooxygenase and 5-lipoxygenase inhibitors 2,6-Di-tert-butylphenol (cas 128-39-2) derivatives09/28/2019

The dual or selective ability of 24 derived mono- and 2,6-di-tert-butylphenols (DTBP) to act as inhibitors of cyclooxygenase (COX) and/or 5-lipoxygenase (LOX) enzymes is investigated. Firstly, we explored the conformational variability of the compounds. It is found that dual inhibitors can adopt...detailed

Synthesis and redox properties of novel ferrocenes with redox active 2,6-Di-tert-butylphenol (cas 128-39-2) fragments: The first example of 2,6-di-tert-butylphenoxyl radicals in ferrocene system10/01/2019

Novel Schiff bases of ferrocenecarboxaldehyde bearing 2,6-di-tert-butyphenol fragments N-(3,5-di-tert-butyl-4-hydroxyphenyl)iminomethylferrocene (1) and N-(3,5-di-tert-butyl-4-hydroxybenzyl)iminomethylferrocene (2) have been synthesized and characterized. The oxidation of the compounds 1 and 2 b...detailed

Synthesis and redox properties of dinuclear rhodium(II) carboxylates with 2,6-Di-tert-butylphenol (cas 128-39-2) moieties09/27/2019

By exploiting the peculiar reactivity of [Rh 2 (μ-O 2 CBu t ) 4 (H 2 O) 2 ] (1) the examples of dinuclear rhodium(II) carboxylates containing N-donor axial ligands (2, 3) [Rh 2 (μ-O 2 CBu t ) 4 L 2 ] [where...detailed

Magnetocaloric properties of manganese(III) porphyrins bearing 2,6-Di-tert-butylphenol (cas 128-39-2) groups09/26/2019

Magnetocaloric effect (MCE) and heat capacity during the magnetization of (5,10,15,20-tetrakis(3,5-di-tert-butyl-4-hydroxyphenyl)porphynato) manganese (III) chloride (1), (5-(4-hydroxyphenyl)-10,15,20-tris(3,5-di-tert-butyl-4-hydroxyphenyl)porphynato) manganese (III) chloride (2), and (5-(4-palm...detailed

128-39-2Relevant articles and documents

Oxidation of 2,6-Di-tert-butylphenol by Molecular Oxygen. 2. Catalysis by Cobaltous Polyamine Chelates through Their (μ-Peroxo)- and (μ-Peroxo)(μ-hydroxo)dicobalt(III) Complexes

Bedell, Stephen A.,Martell, Arthur E.

, p. 7909 - 7913 (1985)

The oxidation of 2,6-di-tert-butylphenol by molecular oxygen is catalyzed by the cobaltous chelates of tetraethylenepentamine (TETREN), dipicolyldiethylenetriamine (PYDIEN), and 1,4,10,13-tetraaza-7-thiatridecane (TATTD), through their (μ-peroxo)dicobalt(III) complexes and by those of dipicolylethylenediamine (PYEN), tris(aminoethyl)amine (TREN), and triethylenetetramine (TRIEN) through their (μ-hydroxo)(μ-peroxo)dicobalt(III) complexes.Reaction products are identified as the oxidative coupling product 3,3'5,5'-tetra-tert-butyldiphenoquinone and the partial oxygen insertion product, 2,6-di-tert-butylbenzoquinone.The rates of reaction of the substrate as well as the formation of products are shown to be first order with respect to the concentrations of both the cobalt-dioxygen complex and the substrate.The reaction with (4+) does not occur in the absence of free molecular oxygen in solution and occurs at a reduced rate under air relative to oxygen.

Bolton et al.

, p. 3415 (1968)

Tertiary butylation of phenol on Cu1-xCoxFe 2O4: Catalysis and structure-activity correlation

Mathew, Thomas,Rao, Bollapragada S.,Gopinath, Chinnakonda S.

, p. 107 - 116 (2004)

A systematic study of catalytic tertiary butylation of phenol was carried out with isobutene as a function of temperature, feed composition, time on stream, space velocity, and catalyst composition on Cu1-xCo xFe2O4 (x=0 to 1) system. Tertiary butylation of phenol gives three products, namely, 2-tert-butyl phenol, 4-tert-butyl phenol, and 2,4-di-tert-butyl phenol. The phenol conversion and selectivity of these products depend on the reaction parameters. A good correlation was found between the activity, in terms of phenol conversion and various product selectivities for this reaction, and the acid-base properties of the catalysts. High activity is achieved with x=0.5 composition, illustrating the importance of a 1:1 combination of Cu and Co and the necessity for optimum concentrations of acid-base centers for this reaction. A reaction mechanism involving the interaction of phenoxide from phenol and the tert-butyl cation from isobutene on Cu1-xCoxFe2O4 is proposed. X-ray photoelectron spectroscopy and X-ray induced Auger electron spectroscopic analysis of fresh and spent catalysts revealed a partial reduction of metal ions due to reaction. Valence band studies clearly revealed an increase in the overlap of metal ion 3d bands from fresh to spent catalysts as reflected from a large decrease in the energy gap between them. The better catalytic results observed with x=0.5 are attributed to an optimum distribution of Cu species with heteroatom neighbors, maximum overlap between the Cu and Co 3d bands, and intermediate acid-base character.

Synthesis and structural characterization of a 4-coordinate molybdenum(VI) dioxo diaryloxide, MoO2(O-2,6-t-Bu2C6H3)2·Ho-2,6-t-Bu2C6H3

Hanna, Tracy A.,Incarvito, Christopher D.,Rheingold, Arnold L.

, p. 630 - 631 (2000)

The facile solution synthesis and spectroscopic and structural characterization of 4-coordinate MoO2(OAr)2. ArOH (1) where Ar = 2,6-di-tert-butylphenyl are described. MoO2(O-2,6-t-Bu2C6H3)2·HO-2,6-t-Bu2C6H3 (1) was synthesized by addition of LiOAr to MoO2Cl2 in CH3CN. Yields are reduced by concurrent oxidation of the phenolic anion to form 3,3',5,5'-tetra-tert-butyl-4,4'-diphenoquinone (4). Relatively strong Mo=O double bonds and p-electron donation from the aryloxide oxygens appear to compensate for the unsaturation of the pseudotetrahedral metal center.

Alkylation of Phenols with tert-Butanol Catalyzed by H-Form of Y Zeolites with a Hierarchical Porous Structure

Bayguzina,Makhiyanova,Khazipova,Khusnutdinov

, p. 1554 - 1559 (2019/10/14)

tert-Butyl-substituted phenols have been synthesized via the reaction of phenol, o-, m-, and p-cresols with tert-butanol under the action of CBr4-promoted Y-zeolites in the H-form with a hierarchical porous structure.

Highly selective conversion of guaiacol to: Tert -butylphenols in supercritical ethanol over a H2WO4 catalyst

Mai, Fuhang,Cui, Kai,Wen, Zhe,Wu, Kai,Yan, Fei,Chen, Mengmeng,Chen, Hong,Li, Yongdan

, p. 2764 - 2771 (2019/02/01)

The conversion of guaiacol is examined at 300 °C in supercritical ethanol over a H2WO4 catalyst. Guaiacol is consumed completely, meanwhile, 16.7% aromatic ethers and 80.0% alkylphenols are obtained. Interestingly, tert-butylphenols are produced mainly with a high selectivity of 71.8%, and the overall selectivity of 2,6-di-tert-butylphenol and 2,6-di-tert-butyl-4-ethylphenol is as high as 63.7%. The experimental results indicate that catechol and 2-ethoxyphenol are the intermediates. Meanwhile, the WO3 sites play an important role in the conversion of guaiacol and the Br?nsted acid sites on H2WO4 enhance the conversion and favour a high selectivity of the tert-butylphenols. The recycling tests show that the carbon deposition on the catalyst surface, the dehydration and partial reduction of the catalyst itself are responsible for the decay of the H2WO4 catalyst. Finally, the possible reaction pathways proposed involve the transetherification process and the alkylation process during guaiacol conversion.

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