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43141-69-1

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43141-69-1 Usage

General Description

3-(Dibutylamino)phenol is a chemical compound that consists of a phenol molecule substituted with a dibutylamino group. It is commonly used as an intermediate in the production of pharmaceuticals, dyes, and other organic compounds. 3-(Dibutylamino)phenol has both phenolic and amine functional groups, making it useful in a variety of chemical reactions. It is known for its antioxidant properties, and has been studied for its potential applications in the development of new materials and as an additive in polymers. Additionally, 3-(Dibutylamino)phenol has been investigated for its potential use in medical research, particularly in the field of neurology and neuropharmacology. Overall, this chemical compound has a wide range of applications in various industries and scientific fields.

Check Digit Verification of cas no

The CAS Registry Mumber 43141-69-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,3,1,4 and 1 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 43141-69:
(7*4)+(6*3)+(5*1)+(4*4)+(3*1)+(2*6)+(1*9)=91
91 % 10 = 1
So 43141-69-1 is a valid CAS Registry Number.
InChI:InChI=1/C14H23NO/c1-3-5-10-15(11-6-4-2)13-8-7-9-14(16)12-13/h7-9,12,16H,3-6,10-11H2,1-2H3

43141-69-1SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 11, 2017

Revision Date: Aug 11, 2017

1.Identification

1.1 GHS Product identifier

Product name 3-(Dibutylamino)phenol

1.2 Other means of identification

Product number -
Other names 3-(di-n-butylamino)phenol

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:43141-69-1 SDS

43141-69-1Synthetic route

N,N-dibutyl-3-aminoaniline
208340-01-6

N,N-dibutyl-3-aminoaniline

3-(N,N-dibutylamino)phenol
43141-69-1

3-(N,N-dibutylamino)phenol

Conditions
ConditionsYield
With sulfuric acid; sodium nitrite In water at 3 - 70℃; for 8h;95.6%
Stage #1: m-amino-N,N-dibutylaniline With sulfuric acid In water at 0℃; Green chemistry;
Stage #2: With sodium nitrite In water at 0 - 10℃; for 8h; Green chemistry;
Stage #3: With sulfuric acid In water at 58℃; for 0.0666667h; Green chemistry;
95.2%
With sulfuric acid; sodium nitrite In water at -5 - 60℃; for 18h; Temperature;95.4%
1-bromo-butane
109-65-9

1-bromo-butane

m-Hydroxyaniline
591-27-5

m-Hydroxyaniline

3-(N,N-dibutylamino)phenol
43141-69-1

3-(N,N-dibutylamino)phenol

Conditions
ConditionsYield
With sodium carbonate In water; isopropyl alcohol Reflux;83%
3-monochlorophenol
108-43-0

3-monochlorophenol

dibutylamine
111-92-2

dibutylamine

3-(N,N-dibutylamino)phenol
43141-69-1

3-(N,N-dibutylamino)phenol

Conditions
ConditionsYield
Stage #1: 3-monochlorophenol; dibutylamine With lithium hexamethyldisilazane; CyJohnPhos; tris(dibenzylideneacetone)dipalladium (0) In tetrahydrofuran at 65℃; for 24h;
Stage #2: With hydrogenchloride In tetrahydrofuran at 20℃; for 0.0833333h; Further stages.;
72%
C14H22NO(1-)*Na(1+)

C14H22NO(1-)*Na(1+)

3-(N,N-dibutylamino)phenol
43141-69-1

3-(N,N-dibutylamino)phenol

Conditions
ConditionsYield
With nitric acid for 1.5h; Reagent/catalyst;69.3%
meta-dinitrobenzene
99-65-0

meta-dinitrobenzene

pentanal
110-62-3

pentanal

benzyl alcohol
100-51-6

benzyl alcohol

3-(N,N-dibutylamino)phenol
43141-69-1

3-(N,N-dibutylamino)phenol

Conditions
ConditionsYield
Stage #1: meta-dinitrobenzene; benzyl alcohol With potassium carbonate In N,N-dimethyl-formamide at 110℃; for 24h;
Stage #2: pentanal With 5%-palladium/activated carbon; hydrogen; acetic acid In ethanol at 50 - 60℃; under 11251.1 - 15001.5 Torr; for 12h; pH=5 - 6; Reagent/catalyst; Temperature;
43%
N-(3-methoxyphenyl)-di-n-butylamine
34874-62-9

N-(3-methoxyphenyl)-di-n-butylamine

3-(N,N-dibutylamino)phenol
43141-69-1

3-(N,N-dibutylamino)phenol

Conditions
ConditionsYield
With boron tribromide In dichloromethane at 20℃; for 10h; Cooling with ice;36.1%
phosphoric acid tributyl ester
126-73-8

phosphoric acid tributyl ester

m-Hydroxyaniline
591-27-5

m-Hydroxyaniline

3-(N,N-dibutylamino)phenol
43141-69-1

3-(N,N-dibutylamino)phenol

Conditions
ConditionsYield
With sodium hydroxide 1) 210 deg C, 2.5h, 2) 80 deg C; Yield given. Multistep reaction;
1-bromo-butane
109-65-9

1-bromo-butane

3-(N-n-butylamino)phenol
58494-81-8

3-(N-n-butylamino)phenol

3-(N,N-dibutylamino)phenol
43141-69-1

3-(N,N-dibutylamino)phenol

Conditions
ConditionsYield
With sodium hydroxide; sodium carbonate In water
3-methoxyphenyl bromide
2398-37-0

3-methoxyphenyl bromide

3-(N,N-dibutylamino)phenol
43141-69-1

3-(N,N-dibutylamino)phenol

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: sodium t-butanolate; palladium diacetate; tri tert-butylphosphoniumtetrafluoroborate / toluene / 5 h / Reflux; Inert atmosphere
2: boron tribromide / dichloromethane / 10 h / 20 °C / Cooling with ice
View Scheme
dibutylamine
111-92-2

dibutylamine

3-(N,N-dibutylamino)phenol
43141-69-1

3-(N,N-dibutylamino)phenol

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: sodium t-butanolate; palladium diacetate; tri tert-butylphosphoniumtetrafluoroborate / toluene / 5 h / Reflux; Inert atmosphere
2: boron tribromide / dichloromethane / 10 h / 20 °C / Cooling with ice
View Scheme
C14H22NO3S(1-)*Na(1+)

C14H22NO3S(1-)*Na(1+)

3-(N,N-dibutylamino)phenol
43141-69-1

3-(N,N-dibutylamino)phenol

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: sodium hydroxide / water / 2 h / 280 °C
2: nitric acid / 1.5 h
View Scheme
3-amino-benzenesulfonic acid, monosodium salt
1126-34-7

3-amino-benzenesulfonic acid, monosodium salt

3-(N,N-dibutylamino)phenol
43141-69-1

3-(N,N-dibutylamino)phenol

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: ammonium hydroxide / water / 2 h / 200 °C
2: sodium hydroxide / water / 2 h / 280 °C
3: nitric acid / 1.5 h
View Scheme
Multi-step reaction with 3 steps
1: potassium hydroxide / water / 3 h / 140 °C / pH 8 - 9 / High pressure
2: sodium hydroxide / water / 2 h / 280 °C
3: nitric acid / 1.5 h
View Scheme
Multi-step reaction with 3 steps
1: potassium hydroxide / water / 5 h / 80 °C
2: sodium hydroxide / water / 2 h / 280 °C
3: nitric acid / 1.5 h
View Scheme
Multi-step reaction with 3 steps
1: magnesium oxide / water / 3 h / 100 °C
2: sodium hydroxide / water / 2 h / 280 °C
3: nitric acid / 1.5 h
View Scheme
m-dibutylaminocarbanilide

m-dibutylaminocarbanilide

3-(N,N-dibutylamino)phenol
43141-69-1

3-(N,N-dibutylamino)phenol

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: sulfuric acid / water / 6 h / 98 - 103 °C
2: sulfuric acid; sodium nitrite / water / 18 h / -5 - 60 °C
View Scheme
m-Hydroxyaniline
591-27-5

m-Hydroxyaniline

halobutane

halobutane

3-(N,N-dibutylamino)phenol
43141-69-1

3-(N,N-dibutylamino)phenol

Conditions
ConditionsYield
With potassium carbonate In water; isopropyl alcohol at 70℃; for 3h;
3-(N,N-dibutylamino)phenol
43141-69-1

3-(N,N-dibutylamino)phenol

4-cyano-1-methyl-3-methylthio-1H-pyrrole-2,5-dione
182359-86-0

4-cyano-1-methyl-3-methylthio-1H-pyrrole-2,5-dione

7-Dibutylamino-2-methyl-2H,4H-[1]benzopyrano[3,4-c]pyrrole-1,3,4-trione

7-Dibutylamino-2-methyl-2H,4H-[1]benzopyrano[3,4-c]pyrrole-1,3,4-trione

Conditions
ConditionsYield
In acetic acid Heating;97%
3-(N,N-dibutylamino)phenol
43141-69-1

3-(N,N-dibutylamino)phenol

squaric acid
2892-51-5

squaric acid

2,4-bis<4-(dibutylamino)-2-hydroxyphenyl>-squaraine
147598-48-9

2,4-bis<4-(dibutylamino)-2-hydroxyphenyl>-squaraine

Conditions
ConditionsYield
With Tributyl orthoformate In isopropyl alcohol for 4h; Heating;85%
3-(N,N-dibutylamino)phenol
43141-69-1

3-(N,N-dibutylamino)phenol

[1,4]naphthoquinone
130-15-4

[1,4]naphthoquinone

2-[2-hydroxy-4-(dibutylamino)phenyl]-1,4-naphthoquinone
131356-67-7

2-[2-hydroxy-4-(dibutylamino)phenyl]-1,4-naphthoquinone

Conditions
ConditionsYield
With copper diacetate In acetic acid at 50℃; for 7.5h;79%
With copper (I) acetate In acetic acid at 60℃; for 4h;63.4%
With copper diacetate; acetic acid at 50℃; Yield given;
3-(N,N-dibutylamino)phenol
43141-69-1

3-(N,N-dibutylamino)phenol

2-methanesulfonyloxybenzaldehyde
49670-40-8

2-methanesulfonyloxybenzaldehyde

C36H50N2O4S

C36H50N2O4S

Conditions
ConditionsYield
With toluene-4-sulfonic acid; acetic acid at 70℃; for 4.5h; Inert atmosphere;68%
3-(N,N-dibutylamino)phenol
43141-69-1

3-(N,N-dibutylamino)phenol

sodium 1,2-naphthoquinone-4-sulfonate
521-24-4

sodium 1,2-naphthoquinone-4-sulfonate

4-[(4-dibutylamino-2-hydroxy)phenyl]-[1,2]naphthoquinone
744216-68-0

4-[(4-dibutylamino-2-hydroxy)phenyl]-[1,2]naphthoquinone

Conditions
ConditionsYield
With nickel dichloride In N,N-dimethyl-formamide at 50℃; for 4h; Inert atmosphere;65%
With nickel dichloride In DMF (N,N-dimethyl-formamide) at 50℃; for 3h;53.1%
Stage #1: 3-(N,N-dibutylamino)phenol; sodium 1,2-naphthoquinone-4-sulfonate With nickel dichloride In N,N-dimethyl-formamide at 50℃; for 3h;
Stage #2: With water In N,N-dimethyl-formamide
53.1%
3-chlorophthalic anhydride
117-21-5

3-chlorophthalic anhydride

3-(N,N-dibutylamino)phenol
43141-69-1

3-(N,N-dibutylamino)phenol

C36H46ClN2O3(1+)*Cl(1-)

C36H46ClN2O3(1+)*Cl(1-)

Conditions
ConditionsYield
Stage #1: 3-chlorophthalic anhydride; 3-(N,N-dibutylamino)phenol With methanesulfonic acid In toluene at 110℃; for 54h; Inert atmosphere;
Stage #2: With hydrogenchloride In methanol; water Inert atmosphere;
65%
3-(N,N-dibutylamino)phenol
43141-69-1

3-(N,N-dibutylamino)phenol

trimellitic Anhydride
552-30-7

trimellitic Anhydride

C37H47N2O5(1+)*Cl(1-)

C37H47N2O5(1+)*Cl(1-)

Conditions
ConditionsYield
Stage #1: 3-(N,N-dibutylamino)phenol; trimellitic Anhydride With methanesulfonic acid In toluene at 110℃; for 64h; Inert atmosphere;
Stage #2: With hydrogenchloride In methanol; water Inert atmosphere;
62%
3-(N,N-dibutylamino)phenol
43141-69-1

3-(N,N-dibutylamino)phenol

C9H11NO4S

C9H11NO4S

C37H55N3O5S

C37H55N3O5S

Conditions
ConditionsYield
With toluene-4-sulfonic acid; acetic acid at 70℃; for 6h; Inert atmosphere;60.5%
3,4-Dichlorocyclobut-3-ene-1,2-dione
2892-63-9

3,4-Dichlorocyclobut-3-ene-1,2-dione

3-(N,N-dibutylamino)phenol
43141-69-1

3-(N,N-dibutylamino)phenol

3-chloro-4-(4-(dibutylamino)-2-hydroxyphenyl)cyclobut-3-ene-1,2-dione

3-chloro-4-(4-(dibutylamino)-2-hydroxyphenyl)cyclobut-3-ene-1,2-dione

Conditions
ConditionsYield
With aluminum (III) chloride In dichloromethane at 50℃; for 2.5h;59.7%
With aluminum (III) chloride In dichloromethane at 50℃; for 2.5h;44.4%
1-(3-methoxy-4-nitrosophenyl)piperidine
1032716-21-4

1-(3-methoxy-4-nitrosophenyl)piperidine

3-(N,N-dibutylamino)phenol
43141-69-1

3-(N,N-dibutylamino)phenol

3-(di-n-butylamino)-7-(piperidin-1-yl)phenoxazin-5-ium chloride
1032716-40-7

3-(di-n-butylamino)-7-(piperidin-1-yl)phenoxazin-5-ium chloride

Conditions
ConditionsYield
With hydrogenchloride In water; isopropyl alcohol for 3 - 4h; Reflux;50%
With hydrogenchloride In water; isopropyl alcohol Reflux;
3-(N,N-dibutylamino)phenol
43141-69-1

3-(N,N-dibutylamino)phenol

methyl iodide
74-88-4

methyl iodide

N-(3-methoxyphenyl)-di-n-butylamine
34874-62-9

N-(3-methoxyphenyl)-di-n-butylamine

Conditions
ConditionsYield
With potassium carbonate In 1-methyl-pyrrolidin-2-one at 60℃; for 6h;48.7%
4-chloromethyl-5-iodothiophene-2-carbaldehyde
1415116-87-8

4-chloromethyl-5-iodothiophene-2-carbaldehyde

3-(N,N-dibutylamino)phenol
43141-69-1

3-(N,N-dibutylamino)phenol

4-((3-(dibutylamino)phenoxy)methyl)-5-iodothiophene-2-carbaldehyde

4-((3-(dibutylamino)phenoxy)methyl)-5-iodothiophene-2-carbaldehyde

Conditions
ConditionsYield
With potassium carbonate; potassium iodide In N,N-dimethyl-formamide for 60h; Inert atmosphere;47%
4-trifluoromethylphenylamine
455-14-1

4-trifluoromethylphenylamine

3-(N,N-dibutylamino)phenol
43141-69-1

3-(N,N-dibutylamino)phenol

C21H26F3N3O

C21H26F3N3O

Conditions
ConditionsYield
Stage #1: 4-trifluoromethylphenylamine With hydrogenchloride; sodium nitrite In water at 20℃; for 2h; Cooling with ice;
Stage #2: 3-(N,N-dibutylamino)phenol With aminosulfonic acid; sodium hydroxide In water at 25℃; for 3h; Cooling with ice;
43%
3-(N,N-dibutylamino)phenol
43141-69-1

3-(N,N-dibutylamino)phenol

sodium 1,2-naphthoquinone-4-sulfonate
521-24-4

sodium 1,2-naphthoquinone-4-sulfonate

A

4-[(4-dibutylamino-2-hydroxy)phenyl]-[1,2]naphthoquinone
744216-68-0

4-[(4-dibutylamino-2-hydroxy)phenyl]-[1,2]naphthoquinone

B

9-dibutylamino-benzo[b]naphtho[1,2-d]furan-5,6-dione
744216-48-6

9-dibutylamino-benzo[b]naphtho[1,2-d]furan-5,6-dione

Conditions
ConditionsYield
With copper dichloride In acetic acid at 50℃; for 7h;A 1.2%
B 42%
With nickel dichloride In N,N-dimethyl-formamide at 50℃; for 5h;A 37%
B 1.1%
phthalic anhydride
85-44-9

phthalic anhydride

3-(N,N-dibutylamino)phenol
43141-69-1

3-(N,N-dibutylamino)phenol

2-(4'-di-n-butylamino-2'-hydroxybenzoyl)benzoic acid
54574-82-2

2-(4'-di-n-butylamino-2'-hydroxybenzoyl)benzoic acid

Conditions
ConditionsYield
In toluene at 100℃; for 30h;41%
3-(N,N-dibutylamino)phenol
43141-69-1

3-(N,N-dibutylamino)phenol

sodium 1,2-naphthoquinone-4-sulfonate
521-24-4

sodium 1,2-naphthoquinone-4-sulfonate

9-dibutylamino-benzo[b]naphtho[1,2-d]furan-5,6-dione
744216-48-6

9-dibutylamino-benzo[b]naphtho[1,2-d]furan-5,6-dione

Conditions
ConditionsYield
With acetic acid; copper dichloride In water Product distribution / selectivity;40.9%
With copper dichloride In water; acetic acid40.9%
3-(N,N-dibutylamino)phenol
43141-69-1

3-(N,N-dibutylamino)phenol

squaric acid
2892-51-5

squaric acid

bis(4-di-n-butylamino-2-hydroxyphenyl)squaraine
87286-91-7

bis(4-di-n-butylamino-2-hydroxyphenyl)squaraine

Conditions
ConditionsYield
In toluene; butan-1-ol for 2h; Heating;40%
In toluene; butan-1-ol
In toluene; butan-1-ol at 125℃; for 5h;
In toluene; butan-1-ol at 125℃; for 5h; Dean-Stark;
1,1-dibenzyl-1,2-dihydronaphthalen-2-one
74849-12-0

1,1-dibenzyl-1,2-dihydronaphthalen-2-one

3-(N,N-dibutylamino)phenol
43141-69-1

3-(N,N-dibutylamino)phenol

5,5-dibenzyl-9-dibutylamino-5H-benzo[b]naphtho[2,1-d]furan-6-one

5,5-dibenzyl-9-dibutylamino-5H-benzo[b]naphtho[2,1-d]furan-6-one

Conditions
ConditionsYield
With iron(III) chloride In dimethyl sulfoxide at 110℃;36%
3-(N,N-dibutylamino)phenol
43141-69-1

3-(N,N-dibutylamino)phenol

1,2-dihydrocarbazole-1,2-dione
105946-78-9

1,2-dihydrocarbazole-1,2-dione

4-[4-(dibutylamino)-2-hydroxyphenyl]-9H-carbazole-1,2-dione
916602-03-4

4-[4-(dibutylamino)-2-hydroxyphenyl]-9H-carbazole-1,2-dione

Conditions
ConditionsYield
With copper dichloride In dimethyl sulfoxide at 50℃; for 1.5h;32%
C18H24O

C18H24O

3-(N,N-dibutylamino)phenol
43141-69-1

3-(N,N-dibutylamino)phenol

5,5-dibutyl-9-dibutylamino-5H-benzo[b]naphtho[2,1-d]furan-6-one

5,5-dibutyl-9-dibutylamino-5H-benzo[b]naphtho[2,1-d]furan-6-one

Conditions
ConditionsYield
With iron(III) chloride In dimethyl sulfoxide at 110℃;30%
3-(N,N-dibutylamino)phenol
43141-69-1

3-(N,N-dibutylamino)phenol

N,N-diethyl-4-nitrosoaniline
120-22-9

N,N-diethyl-4-nitrosoaniline

3-dibutylamino-7-diethylaminophenoxazinium perchlorate

3-dibutylamino-7-diethylaminophenoxazinium perchlorate

Conditions
ConditionsYield
With perchloric acid; air In ethanol Heating;21%
With perchloric acid In ethanol; water for 3h; Heating / reflux;2%
C26H40O

C26H40O

3-(N,N-dibutylamino)phenol
43141-69-1

3-(N,N-dibutylamino)phenol

5,5-dioctyl-9-dibutylamino-5H-benzo[b]naphtho[2,1-d]furan-6-one

5,5-dioctyl-9-dibutylamino-5H-benzo[b]naphtho[2,1-d]furan-6-one

Conditions
ConditionsYield
With iron(III) chloride In dimethyl sulfoxide at 110℃;21%
N-Dibutylaniline
613-29-6

N-Dibutylaniline

3-(N,N-dibutylamino)phenol
43141-69-1

3-(N,N-dibutylamino)phenol

squaric acid
2892-51-5

squaric acid

A

2,4-bis<4-(dibutylamino)phenyl>cyclobutenebis(ylium)-1,3-diolate
121289-35-8

2,4-bis<4-(dibutylamino)phenyl>cyclobutenebis(ylium)-1,3-diolate

B

2-(4-Dibutylamino-2-hydroxy-phenyl)-4-(4-dibutylamino-phenyl)-cyclobutane-1,3-dione

2-(4-Dibutylamino-2-hydroxy-phenyl)-4-(4-dibutylamino-phenyl)-cyclobutane-1,3-dione

C

2,4-Bis-(4-dibutylamino-2-hydroxy-phenyl)-cyclobutane-1,3-dione

2,4-Bis-(4-dibutylamino-2-hydroxy-phenyl)-cyclobutane-1,3-dione

Conditions
ConditionsYield
With Tributyl orthoformate In isopropyl alcohol for 6h; Heating;A 16%
B 19%
C 12%
3-(N,N-dibutylamino)phenol
43141-69-1

3-(N,N-dibutylamino)phenol

p-dimethylaminonitrosobenzene
138-89-6

p-dimethylaminonitrosobenzene

C22H30N3O(1+)*ClO4(1-)

C22H30N3O(1+)*ClO4(1-)

Conditions
ConditionsYield
With perchloric acid; air In ethanol Heating;5%

43141-69-1Relevant articles and documents

Investigation of benzophenoxazine derivatives for the detection of latent fingerprints on porous surfaces

Alsolmy, Eman,Abdelwahab, Walid M.,Martinez, Vincent,Henary, Maged,Patonay, Gabor

, (2020/02/11)

In this report, two classes of benzophenoxazine dyes, Nile red and Nile blue derivatives, were evaluated for the detection of latent fingerprints on porous surfaces. The efficiency to develop fingerprints is influenced by the physical properties of the dye molecules including hydrophobicity as characterized by distribution coefficient value (logD), and other factors such as chemical structure of the dye and hydrogen bonds. Both Nile red and the basic form of Nile blue showed excellent to acceptable ability to detect fingerprints due to their great hydrophobicity at 515 and Crime Scene Search (CSS) settings of the forensic light source. Higher hydrophobicity derivatives of Nile red and Nile blue (in the basic form) improved both quality and sensitivity of fingerprint detection in comparison with their corresponding parent dyes. They developed strong luminescent and visible fingerprints, and a better contrast was achieved between impressions and the background surface suggesting the potential use of these compounds in forensic investigation. Therefore, the hydrophobic derivatives are considered dual-fingerprint reagents because the developed prints can be seen by the naked eye and under illumination process. However, lower hydrophobicity derivatives of Nile red and Nile blue and derivatives with different substituents developed weak or non-luminescent fingerprints with poor contrast. A complete analysis of what dye properties are the most important in fingerprint detection is discussed along with dye optimization for improved performance.

Method for continuously synthesizing meta-di-alkane aminophenol

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Paragraph 0027; 0033; 0042, (2019/01/23)

The invention discloses a method for continuously synthesizing meta-di-alkane aminophenol. The technical scheme includes that continuous diazotization or continuous diazonium salt hydrolysis or continuous diazotization and diazonium salt hydrolysis is carried on raw materials such as di-alkane aminophenol, sodium nitrite and sulfuric acid, and after-treatment such as extraction is carried out to obtain the meta-di-alkane aminophenol which is a product. The method has the advantages that the raw materials can come from sufficient sources and are low in cost, processes for synthesizing the meta-di-alkane aminophenol are high in safety, products are high in yield, the method is little in waste gas, wastewater and industrial residue pollution, is green and environmental friendly and has a highindustrialization value, and the like.

Synthetic method for m-dialkylaminophenol

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Paragraph 0020, (2019/01/08)

The invention provides a synthetic method for m-dialkylaminophenol. The synthetic method is characterized by comprising the following steps: step 1, adding an aqueous solution of sodium nitrite into an aqueous solution of sulfuric acid containing m-dialkylaminoaniline drop by drop at a temperature of -10 to 20 DEG C, and maintaining the obtained solution at a temperature of 5 to 30 DEG C for 1 to10 h after completion of the addition so as to obtain an aqueous solution of sulfuric acid containing m-dialkylaminoaniline diazohydrosulfate; and step 2, directly heating aqueous solution of sulfuricacid containing m-dialkylaminoaniline diazohydrosulfate to 45-110 DEG C, maintaining the solution at the temperature for 1-18 h, allowing m-dialkylaminoaniline diazohydrosulfate to undergo the hydrolysis reaction of a diazonium salt, and successively carrying out cooling and post-treatment so as to obtain the product dialkylaminophenol, wherein sulfuric acid needed in the first step and the second step is totally added in one shot in a first-step reaction, and the first-step diazotization reaction and the second-step hydrolysis reaction of the diazonium salt are carried out step by step in one pot. The method of the invention has the characteristics of low raw material price, sufficient raw material sources, high safety, high product yield, less three-wastes pollution and the like, and has high industrialization value.

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