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126-39-6 Usage

Chemical Properties

Clear colourless liquid

Uses

Different sources of media describe the Uses of 126-39-6 differently. You can refer to the following data:
1. Solvent.
2. 2-Ethyl-2-methyl-1,3-dioxolane was employed as reagent in the selective ketalization of 1-oxo functions of 8a-methyl 1,6-dioxo 1,2,3,4,6,7,8,8a-octahydronaphthalene and 7a-methyl 1,5-dioxo 5,6,7,7a-tetrahydroindane. It was also employed in the enantioselective total synthesis of (-)-strychnine.

Hazard

Flammable, dangerous fire risk.

Check Digit Verification of cas no

The CAS Registry Mumber 126-39-6 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 6 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 126-39:
(5*1)+(4*2)+(3*6)+(2*3)+(1*9)=46
46 % 10 = 6
So 126-39-6 is a valid CAS Registry Number.
InChI:InChI=1/C6H12O2/c1-3-6(2)7-4-5-8-6/h3-5H2,1-2H3

126-39-6 Well-known Company Product Price

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  • (Code)Product description
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  • Detail
  • Aldrich

  • (341045)  2-Ethyl-2-methyl-1,3-dioxolane  99%

  • 126-39-6

  • 341045-50G

  • 947.70CNY

  • Detail
  • Aldrich

  • (341045)  2-Ethyl-2-methyl-1,3-dioxolane  99%

  • 126-39-6

  • 341045-250G

  • 3,167.19CNY

  • Detail

126-39-6SDS

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-ETHYL-2-METHYL-1,3-DIOXOLANE

1.2 Other means of identification

Product number -
Other names 2,2-ethylenedioxybutane

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
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:126-39-6 SDS

126-39-6Synthetic route

ethylene glycol
107-21-1

ethylene glycol

butanone
78-93-3

butanone

2-ethyl-2-methyl-1,3-dioxolane
126-39-6

2-ethyl-2-methyl-1,3-dioxolane

Conditions
ConditionsYield
With phosphorus modified SO4(2-)/TiO2 In cyclohexane for 2h; Dean-Stark; Reflux;99%
With [CuI4CuII(mtpo)4(H2O)2Cl2]n In toluene at 110℃; for 24h;97%
With polyacrylonitrile hybrid fiber mat supported solid acid catalyst In cyclohexane Reflux;96.56%
2-methyl-1,3-dioxolane
497-26-7

2-methyl-1,3-dioxolane

ethene
74-85-1

ethene

A

2-ethyl-2-methyl-1,3-dioxolane
126-39-6

2-ethyl-2-methyl-1,3-dioxolane

B

2-n-butyl-2-methyl-1,3-dioxolane
14447-27-9

2-n-butyl-2-methyl-1,3-dioxolane

C

2-methyl-2-hexyl-1,3-dioxolane
937-94-0

2-methyl-2-hexyl-1,3-dioxolane

D

acetic acid butyl ester
123-86-4

acetic acid butyl ester

E

1-hexyl acetate
142-92-7

1-hexyl acetate

F

n-octyl acetate
112-14-1

n-octyl acetate

Conditions
ConditionsYield
di-tert-butyl peroxide at 140 - 150℃; Product distribution;
2,2,7,7-tetramethyl-3,6-dioxa-2,7-disilaoctane
7381-30-8

2,2,7,7-tetramethyl-3,6-dioxa-2,7-disilaoctane

butanone
78-93-3

butanone

2-ethyl-2-methyl-1,3-dioxolane
126-39-6

2-ethyl-2-methyl-1,3-dioxolane

Conditions
ConditionsYield
With NafionTMS at 70℃; for 20h; acetalisation;
2-ethyl-2-methyl-1,3-dioxolane
126-39-6

2-ethyl-2-methyl-1,3-dioxolane

Toluene-4-sulfonic acid (1R,4aR,8aR)-8a-methyl-6-oxo-decahydro-naphthalen-1-yl ester
123995-06-2

Toluene-4-sulfonic acid (1R,4aR,8aR)-8a-methyl-6-oxo-decahydro-naphthalen-1-yl ester

(4'aα,5'α,8'aβ)-octahydro-4'a-methylspiro<1,3-dioxolane-2,2'(1'H)-naphthalene>-5'-ol 5'-(4-methylbenzenesulfonate)
123995-05-1

(4'aα,5'α,8'aβ)-octahydro-4'a-methylspiro<1,3-dioxolane-2,2'(1'H)-naphthalene>-5'-ol 5'-(4-methylbenzenesulfonate)

Conditions
ConditionsYield
toluene-4-sulfonic acid; ethylene glycol In dichloromethane for 24h; Ambient temperature;100%
2-ethyl-2-methyl-1,3-dioxolane
126-39-6

2-ethyl-2-methyl-1,3-dioxolane

(1α,3aβ,7α,8aβ)-3,3a,6,7,8,8a-hexahydro-1,7-dimethyl-1,7-ethanoazulene-2(1H),5(4H)-dione
89951-20-2

(1α,3aβ,7α,8aβ)-3,3a,6,7,8,8a-hexahydro-1,7-dimethyl-1,7-ethanoazulene-2(1H),5(4H)-dione

(1'α,3'aβ,7'α,8'aβ)-1',2',3',3'a,6',7',8',8'a-octahydro-1',7'-dimethylspiro<1,3-dioxolane-2,2'-<1,7>ethanoazulen>-5(4H)-one
89951-21-3

(1'α,3'aβ,7'α,8'aβ)-1',2',3',3'a,6',7',8',8'a-octahydro-1',7'-dimethylspiro<1,3-dioxolane-2,2'-<1,7>ethanoazulen>-5(4H)-one

Conditions
ConditionsYield
With toluene-4-sulfonic acid; ethylene glycol for 8h; Ambient temperature;100%
90%
2-ethyl-2-methyl-1,3-dioxolane
126-39-6

2-ethyl-2-methyl-1,3-dioxolane

3-Oxo-bicyclo[3.2.1]octane-6,6-dicarbothioic acid di-S-ethyl ester
137956-75-3

3-Oxo-bicyclo[3.2.1]octane-6,6-dicarbothioic acid di-S-ethyl ester

C16H24O4S2
137956-77-5

C16H24O4S2

Conditions
ConditionsYield
With toluene-4-sulfonic acid In benzene Heating;100%
2-ethyl-2-methyl-1,3-dioxolane
126-39-6

2-ethyl-2-methyl-1,3-dioxolane

(R)-1β-<(tert-butyldimethylsilyl)oxy>-8aβ-methyl-1,2,3,4,4aα,5,8,8a-octahydro-6(7H)-naphthalenone
111324-63-1

(R)-1β-<(tert-butyldimethylsilyl)oxy>-8aβ-methyl-1,2,3,4,4aα,5,8,8a-octahydro-6(7H)-naphthalenone

tert-Butyl-dimethyl-((4'aR,5'R,8'aR)-4'a-methyl-octahydro-spiro[[1,3]dioxolane-2,2'-naphthalen]-5'-yloxy)-silane
125489-04-5

tert-Butyl-dimethyl-((4'aR,5'R,8'aR)-4'a-methyl-octahydro-spiro[[1,3]dioxolane-2,2'-naphthalen]-5'-yloxy)-silane

Conditions
ConditionsYield
With toluene-4-sulfonic acid; ethylene glycol at 25℃; for 8h;100%
2-ethyl-2-methyl-1,3-dioxolane
126-39-6

2-ethyl-2-methyl-1,3-dioxolane

(E)-1-(4-methoxyphenyl)-4-phenylbut-3-en-2-one
117535-79-2

(E)-1-(4-methoxyphenyl)-4-phenylbut-3-en-2-one

cinnam-(p-methoxyphenyl)-1,3-dioxolane

cinnam-(p-methoxyphenyl)-1,3-dioxolane

Conditions
ConditionsYield
With toluene-4-sulfonic acid In ethylene glycol; benzene for 4.5h; acetal formation; Heating;100%
2-ethyl-2-methyl-1,3-dioxolane
126-39-6

2-ethyl-2-methyl-1,3-dioxolane

C16(13)CH16O2

C16(13)CH16O2

C18(13)CH20O3

C18(13)CH20O3

Conditions
ConditionsYield
With toluene-4-sulfonic acid In ethylene glycol; benzene for 4.5h; acetal formation; Heating;100%
2-ethyl-2-methyl-1,3-dioxolane
126-39-6

2-ethyl-2-methyl-1,3-dioxolane

4-methoxy-r-1,c-2,c-9-trimethylbicyclo<4.3.0>non-4-en-7-one

4-methoxy-r-1,c-2,c-9-trimethylbicyclo<4.3.0>non-4-en-7-one

r-1,c-5,c-6-trimethylspirononane-3,2'-<1,3>dioxolan>-9-one
100692-68-0

r-1,c-5,c-6-trimethylspirononane-3,2'-<1,3>dioxolan>-9-one

Conditions
ConditionsYield
With toluene-4-sulfonic acid In benzene for 48h; Ambient temperature;99%
2-ethyl-2-methyl-1,3-dioxolane
126-39-6

2-ethyl-2-methyl-1,3-dioxolane

(4S,1R,5R,6R,8aR)-4-[(4-methoxyphenyl)methoxy]-5,8a-dimethyl-5-[2-(tert-butyldimethylsilanyloxy)ethyl]perhydronaphthalene-1,6-dicarbaldehyde
1018479-87-2

(4S,1R,5R,6R,8aR)-4-[(4-methoxyphenyl)methoxy]-5,8a-dimethyl-5-[2-(tert-butyldimethylsilanyloxy)ethyl]perhydronaphthalene-1,6-dicarbaldehyde

(8S,1R,2R,5R,4aR)-2,5-di(1,3-dioxolan-2-yl)-8-[(4-methoxyphenyl)methoxy]-1,4a-dimethyl-1-[2-(tert-butyldimethylsilanyloxy)ethyl]perhydronaphthalene
1018479-88-3

(8S,1R,2R,5R,4aR)-2,5-di(1,3-dioxolan-2-yl)-8-[(4-methoxyphenyl)methoxy]-1,4a-dimethyl-1-[2-(tert-butyldimethylsilanyloxy)ethyl]perhydronaphthalene

Conditions
ConditionsYield
With toluene-4-sulfonic acid In ethylene glycol at 40℃; for 7.5h; Inert atmosphere;99%
2-ethyl-2-methyl-1,3-dioxolane
126-39-6

2-ethyl-2-methyl-1,3-dioxolane

2-(1-bromoethyl)-2-(bromomethyl)-1,3-dioxolane
20599-03-5

2-(1-bromoethyl)-2-(bromomethyl)-1,3-dioxolane

Conditions
ConditionsYield
With bromine In dichloromethane at 30℃; for 4.3h;98%
With bromine In dichloromethane at 30℃;98%
With bromine In dichloromethane Bromination;
2-ethyl-2-methyl-1,3-dioxolane
126-39-6

2-ethyl-2-methyl-1,3-dioxolane

C27H24N2O4

C27H24N2O4

6-(2-(1,3-dioxolan-2-yl)ethyl)-1,4-dibenzyl-6-phenylpiperazine-2,3,5-trione

6-(2-(1,3-dioxolan-2-yl)ethyl)-1,4-dibenzyl-6-phenylpiperazine-2,3,5-trione

Conditions
ConditionsYield
With toluene-4-sulfonic acid at 20℃; for 16h; Inert atmosphere;98%
2-ethyl-2-methyl-1,3-dioxolane
126-39-6

2-ethyl-2-methyl-1,3-dioxolane

5-methoxy-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
54100-20-8

5-methoxy-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione

C14H20O4
85532-84-9

C14H20O4

Conditions
ConditionsYield
With toluene-4-sulfonic acid for 168h; Ambient temperature;97%
2-ethyl-2-methyl-1,3-dioxolane
126-39-6

2-ethyl-2-methyl-1,3-dioxolane

(4aα,5α,8α,8aβ)-octahydro-5,8-dihydroxy-4a,8-dimethyl-2(1H)-naphthalenone 5-(4-methylbenzenesulfonate)
123994-89-8

(4aα,5α,8α,8aβ)-octahydro-5,8-dihydroxy-4a,8-dimethyl-2(1H)-naphthalenone 5-(4-methylbenzenesulfonate)

(4'aα,5'α,8'α,8'aβ)-octahydro-4'a,8'-dimethylspiro<1,3-dioxolane-2,2'(1'H)-naphthalene>-5',8'-diol 5'-(4-methylbenzenesulfonate)
124095-81-4

(4'aα,5'α,8'α,8'aβ)-octahydro-4'a,8'-dimethylspiro<1,3-dioxolane-2,2'(1'H)-naphthalene>-5',8'-diol 5'-(4-methylbenzenesulfonate)

Conditions
ConditionsYield
toluene-4-sulfonic acid; ethylene glycol In dichloromethane for 24h; Ambient temperature;97%
With toluene-4-sulfonic acid Ambient temperature;
2-ethyl-2-methyl-1,3-dioxolane
126-39-6

2-ethyl-2-methyl-1,3-dioxolane

(3S,4aR,5R,8aS)-5,8a-dimethyl-3-isopropenyl-2,3,4,4a,5,7,8,8a-octahydronaphthalene-1,6-dione
141871-31-0

(3S,4aR,5R,8aS)-5,8a-dimethyl-3-isopropenyl-2,3,4,4a,5,7,8,8a-octahydronaphthalene-1,6-dione

(3S,4aR,5R,8aS)-5,8a-dimethyl-6-(1,3-dioxolan-2-yl)-3-isopropenyl-2,3,4,4a,5,7,8,8a-octahydronaphthalene-1(2H)-one
141871-25-2

(3S,4aR,5R,8aS)-5,8a-dimethyl-6-(1,3-dioxolan-2-yl)-3-isopropenyl-2,3,4,4a,5,7,8,8a-octahydronaphthalene-1(2H)-one

Conditions
ConditionsYield
With toluene-4-sulfonic acid; ethylene glycol for 0.25h;97%
2-ethyl-2-methyl-1,3-dioxolane
126-39-6

2-ethyl-2-methyl-1,3-dioxolane

cyclohepta-3,6-diene-1,2,5-trione-5-(O-methyloxime)
1146894-85-0

cyclohepta-3,6-diene-1,2,5-trione-5-(O-methyloxime)

C12H15NO5
1101862-42-3

C12H15NO5

Conditions
ConditionsYield
With toluene-4-sulfonic acid In dichloromethane at 20℃; for 2h;96%
2-ethyl-2-methyl-1,3-dioxolane
126-39-6

2-ethyl-2-methyl-1,3-dioxolane

(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
33878-99-8

(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione

(8aS)-1,1-(1,2-ethylenedioxy)-1,2,3,4,6,7,8,8a-octahydro-8a-methyl-6-oxonaphthalene
61950-54-7

(8aS)-1,1-(1,2-ethylenedioxy)-1,2,3,4,6,7,8,8a-octahydro-8a-methyl-6-oxonaphthalene

Conditions
ConditionsYield
With toluene-4-sulfonic acid In ethylene glycol Inert atmosphere; regioselective reaction;95%
With toluene-4-sulfonic acid; ethylene glycol94%
With toluene-4-sulfonic acid In ethylene glycol for 30h; Ambient temperature;79%
With toluene-4-sulfonic acid
With toluene-4-sulfonic acid In ethylene glycol
2-ethyl-2-methyl-1,3-dioxolane
126-39-6

2-ethyl-2-methyl-1,3-dioxolane

A

3',4',8',8'a-tetrahydro-8'a-methylspiro[1,3-dioxolane-2,1'(2'H)-naphthalen]-6'(7'H)-one
42742-18-7

3',4',8',8'a-tetrahydro-8'a-methylspiro[1,3-dioxolane-2,1'(2'H)-naphthalen]-6'(7'H)-one

B

9-Methyl-Δ4-octalindion-(3,8)-diethylenlactal
97194-25-7

9-Methyl-Δ4-octalindion-(3,8)-diethylenlactal

Conditions
ConditionsYield
With toluene-4-sulfonic acid In ethylene glycol for 30h; Ambient temperature; Title compound not separated from byproducts;A 95%
B 2%
2-ethyl-2-methyl-1,3-dioxolane
126-39-6

2-ethyl-2-methyl-1,3-dioxolane

ethyl 3,3a,6,6a-tetrahydro-2,5-dioxo-1H,4H-pentalene-4-carboxylate
74877-23-9

ethyl 3,3a,6,6a-tetrahydro-2,5-dioxo-1H,4H-pentalene-4-carboxylate

1,2,3,3a,6,6a-hexahydro-5'-oxo-4'-(carboethoxy)-1,3-dioxolane-2-spiro-2'(1'H)-pentalene
74923-22-1

1,2,3,3a,6,6a-hexahydro-5'-oxo-4'-(carboethoxy)-1,3-dioxolane-2-spiro-2'(1'H)-pentalene

Conditions
ConditionsYield
With toluene-4-sulfonic acid In ethylene glycol for 3h;95%
2-ethyl-2-methyl-1,3-dioxolane
126-39-6

2-ethyl-2-methyl-1,3-dioxolane

3-acetoxy-5-(4-methoxybenzocyclobutenyl)pentan-2-one
80251-91-8

3-acetoxy-5-(4-methoxybenzocyclobutenyl)pentan-2-one

3-acetoxy-5-(4-methoxybenzocyclobutenyl)pentan-2-one-2-ethylene ketal
80251-92-9

3-acetoxy-5-(4-methoxybenzocyclobutenyl)pentan-2-one-2-ethylene ketal

Conditions
ConditionsYield
With (1S)-10-camphorsulfonic acid In dichloromethane for 2h; Ambient temperature;95%
2-ethyl-2-methyl-1,3-dioxolane
126-39-6

2-ethyl-2-methyl-1,3-dioxolane

(3aSR,7aRS)-7a-acetyl-7,7-dimethylhexahydro-1H-inden-5(6H)-one

(3aSR,7aRS)-7a-acetyl-7,7-dimethylhexahydro-1H-inden-5(6H)-one

1-((3a'SR,7a'RS)-7',7'-dimethyloctahydrospiro[[1,3]dioxolane-2,5'-indene]-7a'-yl)ethanone

1-((3a'SR,7a'RS)-7',7'-dimethyloctahydrospiro[[1,3]dioxolane-2,5'-indene]-7a'-yl)ethanone

Conditions
ConditionsYield
With toluene-4-sulfonic acid In ethylene glycol at 22℃; for 0.75h;95%
2-ethyl-2-methyl-1,3-dioxolane
126-39-6

2-ethyl-2-methyl-1,3-dioxolane

(4aα,5α,8α,8aβ)-octahydro-5,8-dihydroxy-4a-methyl-2(1H)-naphthalenone 5-(4-methylbenzenesulfonate)
124095-83-6

(4aα,5α,8α,8aβ)-octahydro-5,8-dihydroxy-4a-methyl-2(1H)-naphthalenone 5-(4-methylbenzenesulfonate)

(4'aα,5'α,8'α,8'aβ)-octahydro-4'a-methylspiro<1,3-dioxolane-2,2'(1'H)-naphthalene>-5',8'-diol 5'-(4-methylbenzenesulfonate)
124149-98-0

(4'aα,5'α,8'α,8'aβ)-octahydro-4'a-methylspiro<1,3-dioxolane-2,2'(1'H)-naphthalene>-5',8'-diol 5'-(4-methylbenzenesulfonate)

Conditions
ConditionsYield
toluene-4-sulfonic acid; ethylene glycol In dichloromethane for 24h; Ambient temperature;94%
2-ethyl-2-methyl-1,3-dioxolane
126-39-6

2-ethyl-2-methyl-1,3-dioxolane

1-carboxy-2-(3',4'-dimethoxyphenyl)-5-oxocyclohexanol
121537-74-4

1-carboxy-2-(3',4'-dimethoxyphenyl)-5-oxocyclohexanol

8-(3,4-Dimethoxy-phenyl)-7-hydroxy-1,4-dioxa-spiro[4.5]decane-7-carboxylic acid
121537-75-5

8-(3,4-Dimethoxy-phenyl)-7-hydroxy-1,4-dioxa-spiro[4.5]decane-7-carboxylic acid

Conditions
ConditionsYield
With toluene-4-sulfonic acid In chloroform for 0.5h; Heating;94%
2-ethyl-2-methyl-1,3-dioxolane
126-39-6

2-ethyl-2-methyl-1,3-dioxolane

4aβ,8α-Dimethyl-3,4,4a,5,6,8aα-hexahydronaphthalene-1(2H),7(8H)-dione
87262-30-4

4aβ,8α-Dimethyl-3,4,4a,5,6,8aα-hexahydronaphthalene-1(2H),7(8H)-dione

4aβ,8α-Dimethyl-3,4,4a,5,6,8aα-hexahydronaphthalene-1(2H),7(8H)-dione 7-ethylene acetal
61302-40-7

4aβ,8α-Dimethyl-3,4,4a,5,6,8aα-hexahydronaphthalene-1(2H),7(8H)-dione 7-ethylene acetal

Conditions
ConditionsYield
With toluene-4-sulfonic acid; ethylene glycol; triethylamine 1) 3 h;93%
2-ethyl-2-methyl-1,3-dioxolane
126-39-6

2-ethyl-2-methyl-1,3-dioxolane

Acetic acid (4aR,8aR)-1,7-dioxo-1,3,4,7,8,8a-hexahydro-2H-naphthalen-4a-ylmethyl ester

Acetic acid (4aR,8aR)-1,7-dioxo-1,3,4,7,8,8a-hexahydro-2H-naphthalen-4a-ylmethyl ester

(1S*,6S*)-6-acetoxymethyl-10,10-ethylenedioxybicyclo<4.4.0>dec-4-en-3-one

(1S*,6S*)-6-acetoxymethyl-10,10-ethylenedioxybicyclo<4.4.0>dec-4-en-3-one

Conditions
ConditionsYield
at 23℃; for 16h;93%
2-ethyl-2-methyl-1,3-dioxolane
126-39-6

2-ethyl-2-methyl-1,3-dioxolane

(1R,6S)-6-(2-oxoethyl)cyclohex-3-en-1-yl 2-hydroxybenzoate

(1R,6S)-6-(2-oxoethyl)cyclohex-3-en-1-yl 2-hydroxybenzoate

(1R,6S)-6-((1,3-dioxalan-2-yl)methyl)cyclohex-3-en-1-yl 2-hydroxybenzoate

(1R,6S)-6-((1,3-dioxalan-2-yl)methyl)cyclohex-3-en-1-yl 2-hydroxybenzoate

Conditions
ConditionsYield
With toluene-4-sulfonic acid at 20℃; for 12h;93%
2-ethyl-2-methyl-1,3-dioxolane
126-39-6

2-ethyl-2-methyl-1,3-dioxolane

7,7-dimethyl-8α-hydroxy-cis-bicyclo<3.3.0>octan-3-one
85096-80-6, 105999-76-6

7,7-dimethyl-8α-hydroxy-cis-bicyclo<3.3.0>octan-3-one

7,7-dimethyl-8α-hydroxy-cis-bicyclo<3.3.0>octan-3-ethylene ketal
85082-87-7, 85115-21-5

7,7-dimethyl-8α-hydroxy-cis-bicyclo<3.3.0>octan-3-ethylene ketal

Conditions
ConditionsYield
With toluene-4-sulfonic acid In benzene for 3h; Heating;92%
2-ethyl-2-methyl-1,3-dioxolane
126-39-6

2-ethyl-2-methyl-1,3-dioxolane

(2R,4R)-2-hydroxy-4-methylcyclohexanone
175775-26-5

(2R,4R)-2-hydroxy-4-methylcyclohexanone

(6R,8R)-8-methyl-1,4-dioxaspiro<4.5>decan-6-ol
175775-27-6

(6R,8R)-8-methyl-1,4-dioxaspiro<4.5>decan-6-ol

Conditions
ConditionsYield
With camphor-10-sulfonic acid; ethylene glycol for 1h; Ambient temperature;92%
2-ethyl-2-methyl-1,3-dioxolane
126-39-6

2-ethyl-2-methyl-1,3-dioxolane

1,2-bis(trimethylsiloxy)cyclobutene
17082-61-0

1,2-bis(trimethylsiloxy)cyclobutene

2-Ethyl-2-methyl-1,3-cyclopentanedione
25112-87-2

2-Ethyl-2-methyl-1,3-cyclopentanedione

Conditions
ConditionsYield
With boron trifluoride diethyl etherate In dichloromethane -78 deg C -> r.t., overnight;91.5%
With boron trifluoride diethyl etherate In dichloromethane -78 deg C -> r.t., overnight;91.5%
With boron trifluoride diethyl etherate In dichloromethane at -78 - 20℃; Condensation;
2-ethyl-2-methyl-1,3-dioxolane
126-39-6

2-ethyl-2-methyl-1,3-dioxolane

4-(1-Nitromethyl-3-oxo-butyl)-indole-1-carboxylic acid methyl ester
74069-10-6

4-(1-Nitromethyl-3-oxo-butyl)-indole-1-carboxylic acid methyl ester

4-[2-(2-Methyl-[1,3]dioxolan-2-yl)-1-nitromethyl-ethyl]-indole-1-carboxylic acid methyl ester
74323-13-0

4-[2-(2-Methyl-[1,3]dioxolan-2-yl)-1-nitromethyl-ethyl]-indole-1-carboxylic acid methyl ester

Conditions
ConditionsYield
With toluene-4-sulfonic acid In benzene at 50 - 55℃;91%
2-ethyl-2-methyl-1,3-dioxolane
126-39-6

2-ethyl-2-methyl-1,3-dioxolane

(1S,2S,4S,7R)-2-Iodo-5-oxo-bicyclo[2.2.1]heptane-7-carboxylic acid methyl ester

(1S,2S,4S,7R)-2-Iodo-5-oxo-bicyclo[2.2.1]heptane-7-carboxylic acid methyl ester

C11H15IO4

C11H15IO4

Conditions
ConditionsYield
With toluene-4-sulfonic acid In benzene Ambient temperature;91%

126-39-6Relevant articles and documents

-

Nayanov et al.

, (1975)

-

-

Bauduin,Pietrasanta

, p. 4225,4230 (1973)

-

Synthesis of 1-bromo-3-buten-2-one

Westerlund, Andreas,Carlson, Rolf

, p. 4035 - 4042 (1999)

A synthetic method for 1-bromo-3-buten-2-one is given. The compound is prepared through the following sequence: 2-butanone to 2-methyl-2-ethyl-1,3- dioxolane to 2-(1-bromoethyl)-2-bromomethyl-1,3-dioxolane to 2-bromomethyl-2- vinyl-1,3-dioxolane to the final product. Full experimental details including spectral data are given.

Solvothermal synthesis, structure and catalytic activity of a mixed-valence CuI/CuII complex with 1-D chain structure

Han, Zhi-Ping,Li, Yahong

, p. 73 - 76 (2012)

A complex of composition [CuI4CuII(mtpo) 4(H2O)2Cl2]n (1) was synthesized from reaction of Hmtpo (Hmtpo = 5-methyl-[l,2,4]-triazolo-[l,5-a]- pyrimidin-7-o1) with one equivalent of CuCl2·2H2O in water at 100 °C under autogenous pressure. Complex 1 was fully characterized by X-ray single crystal diffraction, elemental analysis and IR spectroscopy. X-ray analysis reveals that complex 1 is a mixed-valence coordination polymer and displays 1-D chain structure. Compound 1 was able to heterogeneously catalyze the ketalization reaction of 2-butanone and ethylene glycol to afford 2-ethyl-2-methyl-[1,3]-dioxolane in excellent yield under mild conditions.

First Example of a Nonanuclear Silver Sulfate Hybrid Cluster: Green Approach for Synthesis of Lewis Acid Catalyst

Paul, Avijit Kumar,Naveen, Kumari,Kumar, Nikhil,Kanagaraj, Rajendiran,Vidya,Rom, Tanmay

, p. 6411 - 6416 (2018)

Finding a high nuclearity hybrid framework with novel structure and properties by an environmentally benign approach is a really challenging task. Herein, a green strategy for synthesis of a new inorganic-organic hybrid framework solid has been described. The framework contains silver sulfate clusters with nine different silver ions with shortest silver-silver connectivity. The present compound is the first example of nonanuclear silver sulfate hybrid framework with a new topology. The hybrid solid compound shows a highly active Lewis acidic nature for the various heterogeneous catalytic reactions such as cyanosilylation, ketalization, and esterification with quantitative transformation and recyclability.

Facile preparation of ionic liquid functionalized magnetic nano-solid acid catalysts for acetalization reaction

Wang, Ping,Kong, Aiguo,Wang, Wenjuan,Zhu, Haiyan,Shan, Yongkui

, p. 159 - 164 (2010)

The facile two-step preparation procedure of a novel magnetic nano-solid acid catalyst is described, which includes grafting an ionic liquid onto Fe 3O4 nanoparticles, followed by the sulfonation of phenyl groups in the ionic liquid. The catalytic performance of this novel material has been systematically studied in the acetal formation of benzaldehyde and ethylene glycol. The experimental results testify this catalyst possesses high catalytic activity with a yield of 97% under mild reaction conditions. Furthermore, the catalyst is readily separated using a permanent magnet and it is reusable without any significant decrease in catalytic activity.

One-pot synthesis of ordered mesoporous zirconium oxophosphate with high thermostability and acidic properties

Miao, Zhichao,Xu, Leilei,Song, Huanling,Zhao, Huahua,Chou, Lingjun

, p. 1942 - 1954 (2013)

A series of mesoporous zirconium oxophosphate (M-ZrPO) with different P/Zr molar ratios (0-1.25) has been prepared via a facile one-pot evaporation-induced self-assembly (EISA) strategy. After removing the structure-directing agents, the M-ZrPO with large specific surface area (160 m2 g-1), big pore volume (0.26 cm3 g-1) and narrow pore size distribution (5.64 nm) has been obtained. Small-angle X-ray diffraction (SXRD) and transmission electron microscopy (TEM) results showed that these materials had ordered mesoporous structure. With the increase of P/Zr, the textural properties of M-ZrPO could be improved. Moreover, the ordered mesostructure could be maintained even when treated at 800°C, indicating the M-ZrPO had attractive thermal stability. NH3-TPD and pyridine-IR analyses showed the presence of abundant Broensted and Lewis acid sites in the material. The M-ZrPO has been used successfully as solid acid catalyst and showed excellent performance in the ketalization reaction.

Interpenetrated and Catenated Zinc Thiosulfates Frameworks with dia and qtz Nets: Synthesis, Structure, and Properties

Karthik, Rajendran,Natarajan, Srinivasan

, p. 2239 - 2248 (2016)

Reactions between Zn(NO3)2·6H2O, Na2S2O3, 4,4′-bipyridine (bpy), 1,2-bis(4-pyridyl)ethene (bpe), 1,2-bis(4-pyridyl)ethane (bpa), and 1,3-bis(4-pyridyl)propane (bpp) under solvothermal conditions resulted in four new zinc thiosulfate hybrid compounds. Compound I has four-membered zinc thiosulfate rings connected by the ligand, 1,3-bis(4-pyridyl)propane (bpp) forming a two-dimensional structure. Compounds II-IV have one-dimensional zinc thiosulfate chains connected by the ligands, bpy (II), bpe (III), and bpa (IV) giving rise to three-dimensional structures. All the four-structures exhibit 3-fold interpenetration. Proton conductivity studies indicate reasonable proton mobility at 34 °C and at 98% relative humidity. The compounds also exhibit Lewis acid character and good photocatalytic activity for the decomposition of cationic dyes.

Preparation of a novel solid acid catalyst with Lewis and Bronsted acid sites and its application in acetalization

Du, Yijun,Shao, Linjun,Luo, Lingyan,Shi, Si,Qi, Chenze

, p. 157 - 163 (2014)

A novel melamine-formaldehyde resin (MFR) supported solid acid with Lewis and Bronsted acid sites was synthesized through the immobilization of acidic ionic liquid and cuprous ion on MFR. The scanning electron microscopy (SEM) characterization showed that addition of PEG-2000 in the synthesis of MFR could promote the formation of regular particles with diameters around 3.7 μm. The XRD pattern demonstrated that some cuprous ions were aggregated. The catalytic performance of this acid catalyst was evaluated by acetalization. The results showed that the catalytic activity of MFR with Bronsted acid could be improved by addition of Lewis acid. The solid acid was very efficient for the acetalization of carbonyl compounds and diols with moderate to excellent yields and there was no loss of catalytic activity even after being recycled for 6 runs. TUeBITAK.

An efficient procedure for protection of carbonyls in Br?nsted acidic ionic liquid [Hmim]BF4

Wu, Hai-Hong,Yang, Fan,Cui, Peng,Tang, Jie,He, Ming-Yuan

, p. 4963 - 4965 (2004)

Protection of carbonyls as acetals or ketals using Br?nsted acidic ionic liquid [Hmim]BF4 as catalyst as well as solvent was investigated. Satisfactory results were obtained for the protection of carbonyls as cycloacetals or ketals with diols. The product can be separated conveniently from the reaction system, and the ionic liquid can be reused after removal of water.

Robust acidic pseudo-ionic liquid catalyst with self-separation ability for esterification and acetalization

Shi, Yingxia,Liang, Xuezheng

, p. 1413 - 1421 (2019/05/04)

The novel acidic pseudo-ionic liquid catalyst with self-separation ability has been synthesized through the quaternization of triphenylphosphine and the acidification with silicotungstic acid. The pseudo-IL showed high activities for the esterification with average conversions over 90%. The pseudo-IL showed even higher activities for acetalization than traditional sulfuric acid. The homogeneous catalytic process benefited the mass transfer efficiency. The pseudo-IL separated from the reaction mixture automatically after reactions, which was superior to other IL catalysts. The high catalytic activities, easy reusability and high stability were the key properties of the novel catalyst, which hold great potential for green chemical processes.

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