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28443-50-7 Usage

Chemical Properties

light brown fine crystalline powder

Uses

2-Amino-5-chlorophenol may be used to synthesize 2-amino-5-chloromuconic semialdehyde and benzoxazole derivatives.

Definition

ChEBI: Phenol carrying amino and chloro substituents at positions 2 and 5 respectively. It is part of the degradation pathway of 4-chloronitrobenzene, CHEBI:34399.

General Description

2-Amino-5-chlorophenol can be synthesized from 2-chloro-5-nitrophenol via reduction. It can also be obtained from 1-chloro-4-nitrobenzene by using a bacterial strain LW1. 2-Amino-5-chlorophenol participates in the condensation reaction with acetylferrocene to afford ferrocenyl Schiff bases bearing a phenol group.

Check Digit Verification of cas no

The CAS Registry Mumber 28443-50-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,8,4,4 and 3 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 28443-50:
(7*2)+(6*8)+(5*4)+(4*4)+(3*3)+(2*5)+(1*0)=117
117 % 10 = 7
So 28443-50-7 is a valid CAS Registry Number.
InChI:InChI=1/C6H6ClNO/c7-4-1-2-5(8)6(9)3-4/h1-3,9H,8H2

28443-50-7 Well-known Company Product Price

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  • Alfa Aesar

  • (H64978)  2-Amino-5-chlorophenol, 97+%   

  • 28443-50-7

  • 25g

  • 494.0CNY

  • Detail
  • Alfa Aesar

  • (H64978)  2-Amino-5-chlorophenol, 97+%   

  • 28443-50-7

  • 100g

  • 1976.0CNY

  • Detail

28443-50-7SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 19, 2017

Revision Date: Aug 19, 2017

1.Identification

1.1 GHS Product identifier

Product name 2-amino-5-chlorophenol

1.2 Other means of identification

Product number -
Other names 5-chloro-ortho-aminophenol

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:28443-50-7 SDS

28443-50-7Synthetic route

5-chloro-2-((5-nitropyrimidin-2-yl)amino)phenyl acetate

5-chloro-2-((5-nitropyrimidin-2-yl)amino)phenyl acetate

2-amino-5-chlorophenol
28443-50-7

2-amino-5-chlorophenol

Conditions
ConditionsYield
With hydrazine hydrate In tetrahydrofuran at 25℃; for 0.5h; Inert atmosphere;89%
With hydrazine In tetrahydrofuran; water at 25℃; for 0.5h; Inert atmosphere;88%
N-(4-chloro-2-hydroxyphenyl)-2,6-difluorobenzamide
1431459-74-3

N-(4-chloro-2-hydroxyphenyl)-2,6-difluorobenzamide

2-amino-5-chlorophenol
28443-50-7

2-amino-5-chlorophenol

Conditions
ConditionsYield
With hydrazine hydrate at 100℃; for 3h; Sealed tube;85%
5-chloro-2-nitrophenol
611-07-4

5-chloro-2-nitrophenol

2-amino-5-chlorophenol
28443-50-7

2-amino-5-chlorophenol

Conditions
ConditionsYield
With iron; ammonium chloride In ethanol; water for 1h; Reflux;81%
With sodium hydroxide; sodium dithionite
With hydrogenchloride; tin(ll) chloride
With hydrazine hydrate In tetrahydrofuran at 100℃; for 10h; chemoselective reaction;93 %Chromat.
N-(4-chlorophenyl)-O-pivaloylhydroxylamine
116278-63-8

N-(4-chlorophenyl)-O-pivaloylhydroxylamine

A

2-amino-5-chlorophenol
28443-50-7

2-amino-5-chlorophenol

B

2,4-Dichloroaniline
554-00-7

2,4-Dichloroaniline

C

N-(4-chloro-2-hydroxyphenyl)-2,2-dimethylpropanamide
116278-66-1

N-(4-chloro-2-hydroxyphenyl)-2,2-dimethylpropanamide

D

p-benzoquinone
106-51-4

p-benzoquinone

Conditions
ConditionsYield
In water; acetonitrile at 40℃; Rate constant; pH=1.0, μ=0.5M; other pH values; other N-aryl-O-pivaloylhydroxylamines;A 3.6%
B 53.2%
C 8.3%
D 3.8%
N-(4-chloro-2-hydroxyphenyl)acetamide
16323-09-4

N-(4-chloro-2-hydroxyphenyl)acetamide

2-amino-5-chlorophenol
28443-50-7

2-amino-5-chlorophenol

Conditions
ConditionsYield
With hydrogenchloride
2-Acetamido-5-chlorophenyl acetate
139399-68-1

2-Acetamido-5-chlorophenyl acetate

2-amino-5-chlorophenol
28443-50-7

2-amino-5-chlorophenol

Conditions
ConditionsYield
With hydrogenchloride
4-chlorobenzonitrile
100-00-5

4-chlorobenzonitrile

2-amino-5-chlorophenol
28443-50-7

2-amino-5-chlorophenol

Conditions
ConditionsYield
With sulfuric acid In ethanol (electrochemical reduction);
α-ketoglutaric acid
328-50-7

α-ketoglutaric acid

1-chloro-4-nitroso-benzene
932-98-9

1-chloro-4-nitroso-benzene

A

4-(4'-hydroxy-phenylamino)-4-oxo-butanoic acid
62558-67-2

4-(4'-hydroxy-phenylamino)-4-oxo-butanoic acid

B

4-amino-phenol
123-30-8

4-amino-phenol

C

2-amino-5-chlorophenol
28443-50-7

2-amino-5-chlorophenol

D

N-(4-chloro-2-hydroxyphenyl)succinamic acid
81576-13-8

N-(4-chloro-2-hydroxyphenyl)succinamic acid

Conditions
ConditionsYield
With thiamine pyrophosphate; α-ketoglutarate dehydrogenase; magnesium chloride In ethanol; water at 30℃; for 2h; KH2PO4 buffer;
O-(m-chloro-phenyl)-hydroxylamine
74993-54-7

O-(m-chloro-phenyl)-hydroxylamine

A

3-monochlorophenol
108-43-0

3-monochlorophenol

B

4-amino-3-chlorophenol
17609-80-2

4-amino-3-chlorophenol

C

2-amino-3-chlorophenol
56962-00-6

2-amino-3-chlorophenol

D

2-amino-5-chlorophenol
28443-50-7

2-amino-5-chlorophenol

Conditions
ConditionsYield
With trifluoroacetic acid at 60℃; for 13h; Product distribution; Rate constant; Kinetics; ΔH(excit.), ΔG(excit.), ΔS(excit.);
1-chloro-4-nitroso-benzene
932-98-9

1-chloro-4-nitroso-benzene

α-ketoglutaric acid disodium salt
305-72-6

α-ketoglutaric acid disodium salt

A

4-(4'-hydroxy-phenylamino)-4-oxo-butanoic acid
62558-67-2

4-(4'-hydroxy-phenylamino)-4-oxo-butanoic acid

B

4-amino-phenol
123-30-8

4-amino-phenol

C

2-amino-5-chlorophenol
28443-50-7

2-amino-5-chlorophenol

D

N-(4-chloro-2-hydroxyphenyl)succinamic acid
81576-13-8

N-(4-chloro-2-hydroxyphenyl)succinamic acid

Conditions
ConditionsYield
With thiamine pyrophosphate; α-ketoglutarate dehydrogenase; magnesium chloride In water at 30℃; for 2h; 0.05M KH2PO4 buffer (pH 7.5); Further byproducts given. Yields of byproduct given;A n/a
B n/a
C n/a
D 2 mg
1-chloro-4-nitroso-benzene
932-98-9

1-chloro-4-nitroso-benzene

α-ketoglutaric acid disodium salt
305-72-6

α-ketoglutaric acid disodium salt

A

4-(4'-hydroxy-phenylamino)-4-oxo-butanoic acid
62558-67-2

4-(4'-hydroxy-phenylamino)-4-oxo-butanoic acid

B

2-amino-5-chlorophenol
28443-50-7

2-amino-5-chlorophenol

C

N-(4-chlorophenyl)succinohydroxamic acid
81576-12-7

N-(4-chlorophenyl)succinohydroxamic acid

D

N-(4-chloro-2-hydroxyphenyl)succinamic acid
81576-13-8

N-(4-chloro-2-hydroxyphenyl)succinamic acid

Conditions
ConditionsYield
With thiamine pyrophosphate; α-ketoglutarate dehydrogenase; magnesium chloride In water at 30℃; for 2h; 0.05M KH2PO4 buffer (pH 7.5); Further byproducts given. Yields of byproduct given;A n/a
B n/a
C 1.5 mg
D 2 mg
2-(benzylimino)-5-chlorophenyl pivalate
116278-65-0

2-(benzylimino)-5-chlorophenyl pivalate

A

2-amino-5-chlorophenol
28443-50-7

2-amino-5-chlorophenol

B

N-(4-chloro-2-hydroxyphenyl)-2,2-dimethylpropanamide
116278-66-1

N-(4-chloro-2-hydroxyphenyl)-2,2-dimethylpropanamide

Conditions
ConditionsYield
In water; acetonitrile at 40℃; Rate constant; pH=1 (1N HCl), μ=0.5M (KCl); other pH value;A 15 % Spectr.
B 78 % Spectr.
N-(4-chlorophenyl)-O-pivaloylhydroxylamine
116278-63-8

N-(4-chlorophenyl)-O-pivaloylhydroxylamine

A

2-azido-4-chlorobenzenamine
17537-17-6

2-azido-4-chlorobenzenamine

B

2-amino-5-chlorophenol
28443-50-7

2-amino-5-chlorophenol

C

N-(4-chloro-2-hydroxyphenyl)-2,2-dimethylpropanamide
116278-66-1

N-(4-chloro-2-hydroxyphenyl)-2,2-dimethylpropanamide

D

2-azido-4-chloroaniline

2-azido-4-chloroaniline

Conditions
ConditionsYield
With sodium azide; tris-(2-chloro-ethyl)-amine In water; acetonitrile at 20℃; Product distribution; Rate constant; Mechanism;
2-amino-5-chlorophenol sulphate ester

2-amino-5-chlorophenol sulphate ester

2-amino-5-chlorophenol
28443-50-7

2-amino-5-chlorophenol

Conditions
ConditionsYield
With hydrogenchloride In water at 100℃; for 0.75h; Hydrolysis; stirring;
4-chloro-aniline
106-47-8

4-chloro-aniline

6-(2,6-dichlorophenyl)-2-methanesulfinyl(or sulfonyl)-8-methyl-8H-pyrido<2,3-d>pyrimidin-7-one

6-(2,6-dichlorophenyl)-2-methanesulfinyl(or sulfonyl)-8-methyl-8H-pyrido<2,3-d>pyrimidin-7-one

2-amino-5-chlorophenol
28443-50-7

2-amino-5-chlorophenol

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: potassium persulphate / KOH / ethanol; H2O / 8 h / stirring
2: HCl / H2O / 0.75 h / 100 °C / stirring
View Scheme
2-acetamidophenyl acetate
5467-64-1

2-acetamidophenyl acetate

2-amino-5-chlorophenol
28443-50-7

2-amino-5-chlorophenol

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: chloroform; chlorine
2: aqueous hydrochloric acid
View Scheme
2-amino-phenol
95-55-6

2-amino-phenol

2-amino-5-chlorophenol
28443-50-7

2-amino-5-chlorophenol

Conditions
ConditionsYield
Multi-step reaction with 3 steps
2: chloroform; chlorine
3: aqueous hydrochloric acid
View Scheme
acetic acid-(4-amino-2-hydroxy-anilide)
5910-69-0

acetic acid-(4-amino-2-hydroxy-anilide)

2-amino-5-chlorophenol
28443-50-7

2-amino-5-chlorophenol

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: aqueous HCl; aqueous NaNO2 / Behandeln des Reaktionsgemisches mit wss.HCl und CuCl
2: aqueous HCl
View Scheme
6-chloro-2-mercaptobenzoxazole
22876-20-6

6-chloro-2-mercaptobenzoxazole

2-amino-5-chlorophenol
28443-50-7

2-amino-5-chlorophenol

Conditions
ConditionsYield
With hydrazine hydrate at 110℃;
tetramethoxymethane
1850-14-2

tetramethoxymethane

2-amino-5-chlorophenol
28443-50-7

2-amino-5-chlorophenol

1-t-Butoxycarbonylpiperazine
57260-71-6

1-t-Butoxycarbonylpiperazine

tert-butyl 4-(6-chlorobenzo[d]oxazol-2-yl)piperazine-1-carboxylate
1092847-79-4

tert-butyl 4-(6-chlorobenzo[d]oxazol-2-yl)piperazine-1-carboxylate

Conditions
ConditionsYield
With acetic acid In chloroform at 60℃;99%
Stage #1: tetramethoxymethane; 2-amino-5-chlorophenol; 1-t-Butoxycarbonylpiperazine With acetic acid In chloroform at 60℃; for 16h; Inert atmosphere;
Stage #2: With sodium hydroxide In chloroform; water at 20℃; Inert atmosphere;
99%
2-amino-5-chlorophenol
28443-50-7

2-amino-5-chlorophenol

acetylenedicarboxylic acid diethyl ester
762-21-0

acetylenedicarboxylic acid diethyl ester

(Z)-3-ethoxycarbonylmethylene-7-chloro-3,4-dihydro-2H-1,4-benzoxazin-2-one
1349803-02-6

(Z)-3-ethoxycarbonylmethylene-7-chloro-3,4-dihydro-2H-1,4-benzoxazin-2-one

Conditions
ConditionsYield
at 20℃; for 0.0833333h; Michael addition;99%
at 20℃; for 0.0833333h;
2-amino-5-chlorophenol
28443-50-7

2-amino-5-chlorophenol

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

(Z)-3-methoxycarbonylmethylene-7-chloro-3,4-dihydro-2H-1,4-benzoxazin-2-one
104827-35-2

(Z)-3-methoxycarbonylmethylene-7-chloro-3,4-dihydro-2H-1,4-benzoxazin-2-one

Conditions
ConditionsYield
at 20℃; for 0.0666667h; Michael addition;98%
In methanol at 20℃; for 1h; Inert atmosphere;83%
In methanol at 20℃; for 2h; Inert atmosphere;
at 20℃; for 0.0666667h;
iodobenzene
591-50-4

iodobenzene

tert-butylisonitrile
119072-55-8, 7188-38-7

tert-butylisonitrile

2-amino-5-chlorophenol
28443-50-7

2-amino-5-chlorophenol

6-chloro-2-phenylbenzo[d]oxazole
15952-20-2

6-chloro-2-phenylbenzo[d]oxazole

Conditions
ConditionsYield
With 1,1'-bis-(diphenylphosphino)ferrocene; caesium carbonate; palladium dichloride In toluene for 2h; Reflux; Inert atmosphere;98%
iodobenzene
591-50-4

iodobenzene

tert-butylisonitrile
119072-55-8, 7188-38-7

tert-butylisonitrile

2-amino-5-chlorophenol
28443-50-7

2-amino-5-chlorophenol

5-chloro-2-phenyl-1,3-benzoxazole
1019-90-5

5-chloro-2-phenyl-1,3-benzoxazole

Conditions
ConditionsYield
With 1,1'-bis-(diphenylphosphino)ferrocene; caesium carbonate; palladium dichloride In toluene for 2h; Inert atmosphere; Reflux;98%
2-amino-5-chlorophenol
28443-50-7

2-amino-5-chlorophenol

benzaldehyde
100-52-7

benzaldehyde

mercaptoacetic acid
68-11-1

mercaptoacetic acid

3-(4-chloro-2-hydroxyphenyl)-2-phenylthiazolidin-4-one
1620166-66-6

3-(4-chloro-2-hydroxyphenyl)-2-phenylthiazolidin-4-one

Conditions
ConditionsYield
With acetic acid In N,N-dimethyl-formamide at 110℃; for 0.15h; Microwave irradiation;98%
2-amino-5-chlorophenol
28443-50-7

2-amino-5-chlorophenol

4-nitrobenzaldehdye
555-16-8

4-nitrobenzaldehdye

mercaptoacetic acid
68-11-1

mercaptoacetic acid

3-(4-chloro-2-hydroxyphenyl)-2-(4-nitrophenyl)thiazolidin-4-one
1620166-67-7

3-(4-chloro-2-hydroxyphenyl)-2-(4-nitrophenyl)thiazolidin-4-one

Conditions
ConditionsYield
With acetic acid In N,N-dimethyl-formamide at 110℃; for 0.15h; Microwave irradiation;98%
2-chloro-benzaldehyde
89-98-5

2-chloro-benzaldehyde

2-amino-5-chlorophenol
28443-50-7

2-amino-5-chlorophenol

mercaptoacetic acid
68-11-1

mercaptoacetic acid

3-(4-chloro-2-hydroxyphenyl)-2-(2-chlorophenyl)thiazolidin-4-one
1620166-70-2

3-(4-chloro-2-hydroxyphenyl)-2-(2-chlorophenyl)thiazolidin-4-one

Conditions
ConditionsYield
With acetic acid In N,N-dimethyl-formamide at 110℃; for 0.166667h; Microwave irradiation;98%
4-fluorobenzaldehyde
459-57-4

4-fluorobenzaldehyde

2-amino-5-chlorophenol
28443-50-7

2-amino-5-chlorophenol

mercaptoacetic acid
68-11-1

mercaptoacetic acid

3-(4-chloro-2-hydroxyphenyl)-2-(4-fluorophenyl)thiazolidin-4-one
1620166-73-5

3-(4-chloro-2-hydroxyphenyl)-2-(4-fluorophenyl)thiazolidin-4-one

Conditions
ConditionsYield
With acetic acid In N,N-dimethyl-formamide at 110℃; for 0.15h; Microwave irradiation;98%
2-amino-5-chlorophenol
28443-50-7

2-amino-5-chlorophenol

mercaptoacetic acid
68-11-1

mercaptoacetic acid

3-Fluorobenzaldehyde
456-48-4

3-Fluorobenzaldehyde

3-(4-chloro-2-hydroxyphenyl)-2-(3-fluorophenyl)thiazolidin-4-one
1620166-74-6

3-(4-chloro-2-hydroxyphenyl)-2-(3-fluorophenyl)thiazolidin-4-one

Conditions
ConditionsYield
With acetic acid In N,N-dimethyl-formamide at 110℃; for 0.15h; Microwave irradiation;98%
2-amino-5-chlorophenol
28443-50-7

2-amino-5-chlorophenol

4-hydroxy-benzaldehyde
123-08-0

4-hydroxy-benzaldehyde

mercaptoacetic acid
68-11-1

mercaptoacetic acid

3-(4-chloro-2-hydroxyphenyl)-2-(4-hydroxyphenyl)thiazolidin-4-one
1620166-77-9

3-(4-chloro-2-hydroxyphenyl)-2-(4-hydroxyphenyl)thiazolidin-4-one

Conditions
ConditionsYield
With acetic acid In N,N-dimethyl-formamide at 110℃; for 0.15h; Microwave irradiation;98%
2-amino-5-chlorophenol
28443-50-7

2-amino-5-chlorophenol

1-Bromo-2-butanone
816-40-0

1-Bromo-2-butanone

7-chloro-3-ethyl-2H-benzo[b][1,4]oxazine

7-chloro-3-ethyl-2H-benzo[b][1,4]oxazine

Conditions
ConditionsYield
With potassium carbonate In acetone at 20℃; for 3h; Cooling with ice;98%
2-amino-5-chlorophenol
28443-50-7

2-amino-5-chlorophenol

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

benzene-1,2-diol

C12H6ClNO3

C12H6ClNO3

Conditions
ConditionsYield
With 3,4,5-trihydroxybenzoic acid; oxygen; potassium carbonate; copper(l) chloride In water at 60℃; under 3750.38 Torr; for 6h;98%
2-amino-5-chlorophenol
28443-50-7

2-amino-5-chlorophenol

3-methylbenzene-1,2-diol
488-17-5

3-methylbenzene-1,2-diol

C13H8ClNO3

C13H8ClNO3

Conditions
ConditionsYield
With cobalt(II) sulfate; 3,4,5-trihydroxybenzoic acid; oxygen; sodium carbonate In water at 15℃; under 3750.38 Torr; for 40h;98%
2-amino-5-chlorophenol
28443-50-7

2-amino-5-chlorophenol

2-aminobenzaldehyde
529-23-7

2-aminobenzaldehyde

5-chloro-2-((6,7,11b,13-tetrahydro-6,12-[1,2]benzenoquinazolino[3,4-a]quinazolin-13-yl)amino)phenol

5-chloro-2-((6,7,11b,13-tetrahydro-6,12-[1,2]benzenoquinazolino[3,4-a]quinazolin-13-yl)amino)phenol

Conditions
ConditionsYield
With scandium pentafluorobenzoate In toluene at 20℃; for 12h;97%
2-amino-5-chlorophenol
28443-50-7

2-amino-5-chlorophenol

2,4-dichlorobenzaldeyhde
874-42-0

2,4-dichlorobenzaldeyhde

mercaptoacetic acid
68-11-1

mercaptoacetic acid

3-(4-chloro-2-hydroxyphenyl)-2-(2,4-dichlorophenyl)thiazolidin-4-one
1620166-68-8

3-(4-chloro-2-hydroxyphenyl)-2-(2,4-dichlorophenyl)thiazolidin-4-one

Conditions
ConditionsYield
With acetic acid In N,N-dimethyl-formamide at 110℃; for 0.166667h; Microwave irradiation;97%
2-amino-5-chlorophenol
28443-50-7

2-amino-5-chlorophenol

4-methoxy-benzaldehyde
123-11-5

4-methoxy-benzaldehyde

mercaptoacetic acid
68-11-1

mercaptoacetic acid

3-(4-chloro-2-hydroxyphenyl)-2-(4-methoxyphenyl)thiazolidin-4-one
1620166-71-3

3-(4-chloro-2-hydroxyphenyl)-2-(4-methoxyphenyl)thiazolidin-4-one

Conditions
ConditionsYield
With acetic acid In N,N-dimethyl-formamide at 110℃; for 0.133333h; Microwave irradiation;97%
2-amino-5-chlorophenol
28443-50-7

2-amino-5-chlorophenol

mercaptoacetic acid
68-11-1

mercaptoacetic acid

2,4-Dimethoxybenzaldehyde
613-45-6

2,4-Dimethoxybenzaldehyde

3-(4-chloro-2-hydroxyphenyl)-2-(2,4-dimethoxyphenyl)thiazolidin-4-one
1620166-72-4

3-(4-chloro-2-hydroxyphenyl)-2-(2,4-dimethoxyphenyl)thiazolidin-4-one

Conditions
ConditionsYield
With acetic acid In N,N-dimethyl-formamide at 110℃; for 0.133333h; Microwave irradiation;97%
pyridine-2-carbaldehyde
1121-60-4

pyridine-2-carbaldehyde

2-amino-5-chlorophenol
28443-50-7

2-amino-5-chlorophenol

mercaptoacetic acid
68-11-1

mercaptoacetic acid

3-(4-chloro-2-hydroxyphenyl)-2-(pyridin-2-yl)thiazolidin-4-one
1620166-76-8

3-(4-chloro-2-hydroxyphenyl)-2-(pyridin-2-yl)thiazolidin-4-one

Conditions
ConditionsYield
With acetic acid In N,N-dimethyl-formamide at 110℃; for 0.133333h; Microwave irradiation;97%
2-amino-5-chlorophenol
28443-50-7

2-amino-5-chlorophenol

2-amino-5-chlorophenol-4-sulphonic acid
132396-97-5

2-amino-5-chlorophenol-4-sulphonic acid

Conditions
ConditionsYield
With sulfuric acid; sulfur trioxide Ambient temperature;96%
1,1,1-trifluoro-4,4-diethoxy-3-buten-2-one
40657-29-2

1,1,1-trifluoro-4,4-diethoxy-3-buten-2-one

2-amino-5-chlorophenol
28443-50-7

2-amino-5-chlorophenol

5-chloro-2-(1,1,1-trifluoroacetonyl)-benzoxazole

5-chloro-2-(1,1,1-trifluoroacetonyl)-benzoxazole

Conditions
ConditionsYield
In toluene for 0.183333h; Irradiation;96%
dichlorodiphenoxymethane
4885-03-4

dichlorodiphenoxymethane

2-amino-5-chlorophenol
28443-50-7

2-amino-5-chlorophenol

1-t-Butoxycarbonylpiperazine
57260-71-6

1-t-Butoxycarbonylpiperazine

tert-butyl 4-(6-chlorobenzo[d]oxazol-2-yl)piperazine-1-carboxylate
1092847-79-4

tert-butyl 4-(6-chlorobenzo[d]oxazol-2-yl)piperazine-1-carboxylate

Conditions
ConditionsYield
With triethylamine In toluene96%
With triethylamine In toluene at 20℃; for 16h; Inert atmosphere;96%
6-Amino-1,3-dimethylbarbituric acid
6642-31-5

6-Amino-1,3-dimethylbarbituric acid

2-amino-5-chlorophenol
28443-50-7

2-amino-5-chlorophenol

6-amino-1,3-dimethyl-5-[(4-chloro-2-hydroxyphenyl)diazenyl]uracil
1242060-36-1

6-amino-1,3-dimethyl-5-[(4-chloro-2-hydroxyphenyl)diazenyl]uracil

Conditions
ConditionsYield
Stage #1: 2-amino-5-chlorophenol With sulfuric acid; acetic acid; zinc(II) chloride; sodium nitrite at 0 - 5℃; for 2h;
Stage #2: 6-Amino-1,3-dimethylbarbituric acid With sodium hydroxide In water at 0 - 5℃; for 0.333333h; pH=7;
96%
4-chlorobenzaldehyde
104-88-1

4-chlorobenzaldehyde

2-amino-5-chlorophenol
28443-50-7

2-amino-5-chlorophenol

mercaptoacetic acid
68-11-1

mercaptoacetic acid

3-(4-chloro-2-hydroxyphenyl)-2-(4-chlorophenyl)thiazolidin-4-one
1620166-69-9

3-(4-chloro-2-hydroxyphenyl)-2-(4-chlorophenyl)thiazolidin-4-one

Conditions
ConditionsYield
With acetic acid In N,N-dimethyl-formamide at 110℃; for 0.15h; Microwave irradiation;96%
thiophene-2-carbaldehyde
98-03-3

thiophene-2-carbaldehyde

2-amino-5-chlorophenol
28443-50-7

2-amino-5-chlorophenol

mercaptoacetic acid
68-11-1

mercaptoacetic acid

3-(4-chloro-2-hydroxyphenyl)-2-(thiophen-2-yl)thiazolidin-4-one
1620166-75-7

3-(4-chloro-2-hydroxyphenyl)-2-(thiophen-2-yl)thiazolidin-4-one

Conditions
ConditionsYield
With acetic acid In N,N-dimethyl-formamide at 110℃; for 0.133333h; Microwave irradiation;96%
4-methyl-1,3-thiazole-5-carbaldehyde
82294-70-0

4-methyl-1,3-thiazole-5-carbaldehyde

2-amino-5-chlorophenol
28443-50-7

2-amino-5-chlorophenol

mercaptoacetic acid
68-11-1

mercaptoacetic acid

3-(4-chloro-2-hydroxyphenyl)-2-(4-methylthiazol-5-yl)thiazolidin-4-one
1620166-78-0

3-(4-chloro-2-hydroxyphenyl)-2-(4-methylthiazol-5-yl)thiazolidin-4-one

Conditions
ConditionsYield
With acetic acid In N,N-dimethyl-formamide at 110℃; for 0.166667h; Microwave irradiation;96%
2-amino-5-chlorophenol
28443-50-7

2-amino-5-chlorophenol

mercaptoacetic acid
68-11-1

mercaptoacetic acid

4-cyanobenzaldehyde
105-07-7

4-cyanobenzaldehyde

4-(3-(4-chloro-2-hydroxyphenyl)-4-oxothiazolidin-2-yl)benzonitrile
1620166-79-1

4-(3-(4-chloro-2-hydroxyphenyl)-4-oxothiazolidin-2-yl)benzonitrile

Conditions
ConditionsYield
With acetic acid In N,N-dimethyl-formamide at 110℃; for 0.15h; Microwave irradiation;96%
acetic anhydride
108-24-7

acetic anhydride

2-amino-5-chlorophenol
28443-50-7

2-amino-5-chlorophenol

N-(4-chloro-2-hydroxyphenyl)acetamide
16323-09-4

N-(4-chloro-2-hydroxyphenyl)acetamide

Conditions
ConditionsYield
With acetic acid at 60℃; for 2h;95.8%
In methanol at 20℃; for 0.5h;
2-amino-5-chlorophenol
28443-50-7

2-amino-5-chlorophenol

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

C11H8ClNO4
91271-41-9

C11H8ClNO4

Conditions
ConditionsYield
In methanol at 20℃; for 0.0833333h;95%
4-fluorobenzaldehyde
459-57-4

4-fluorobenzaldehyde

2-amino-5-chlorophenol
28443-50-7

2-amino-5-chlorophenol

6-chloro-2-(4-fluorophenyl)benzo[d]oxazole
1315571-17-5

6-chloro-2-(4-fluorophenyl)benzo[d]oxazole

Conditions
ConditionsYield
With copper(II) ferrite; oxygen In toluene at 110℃; for 24h; Schlenk technique; Sealed tube; Green chemistry;95%
With oxygen In toluene at 110℃; for 24h; Schlenk technique; Green chemistry;71%

28443-50-7Relevant articles and documents

Benzothiazolyl ureas are low micromolar and uncompetitive inhibitors of 17Β-HSD10 with implications to Alzheimer’s disease treatment

Aitken, Laura,Benek, Ondrej,Chribek, Matej,Dolezal, Rafael,Gunn-Moore, Frank,Hrabinova, Martina,Hroch, Lukas,Jun, Daniel,Kralova, Vendula,Kuca, Kamil,Lycka, Antonin,Musilek, Kamil,Prchal, Lukas,Schmidt, Monika,Vinklarova, Lucie,Zemanova, Lucie

, (2020/03/26)

Human 17β-hydroxysteroid dehydrogenase type 10 is a multifunctional protein involved in many enzymatic and structural processes within mitochondria. This enzyme was suggested to be involved in several neurological diseases, e.g., mental retardation, Parkinson’s disease, or Alzheimer’s disease, in which it was shown to interact with the amyloid-beta peptide. We prepared approximately 60 new compounds based on a benzothiazolyl scaffold and evaluated their inhibitory ability and mechanism of action. The most potent inhibitors contained 3-chloro and 4-hydroxy substitution on the phenyl ring moiety, a small substituent at position 6 on the benzothiazole moiety, and the two moieties were connected via a urea linker (4at, 4bb, and 4bg). These compounds exhibited IC50 values of 1–2 μM and showed an uncompetitive mechanism of action with respect to the substrate, acetoacetyl-CoA. These uncompetitive benzothiazolyl inhibitors of 17β-hydroxysteroid dehydrogenase type 10 are promising compounds for potential drugs for neurodegenerative diseases that warrant further research and development.

One-Pot Protocol to Synthesize 2-Aminophenols from Anilines via Palladium-Catalyzed C-H Acetoxylation

Zhao, Junhao,Huang, Yifeng,Ma, Guojian,Lin, Ling,Feng, Pengju

, p. 2084 - 2091 (2019/05/21)

This paper describes a facile one-pot protocol to synthesize 2-aminophenol derivatives via a palladium-catalyzed C-H acetoxylation strategy with 5-nitropyrimidine as a directing group (DG), which can be easily preinstalled and readily removed under mild condition after the coupling. In addition, the transformation is operationally simple, has high functional group tolerance, and is amenable to gram-scale. Moreover, several examples were shown that introduction/removal of 5-nitropyrimidine and the C-H oxylation sequence could be integrated in one pot.

Synthesis of 2-aminophenols and heterocycles by Ru-catalyzed C-H mono- and dihydroxylation

Yang, Xinglin,Shan, Gang,Rao, Yu

supporting information, p. 2334 - 2337 (2013/07/04)

A novel and efficient synthesis of 2-aminophenols, 2-aminobenzene-1,3- diols, and heterocycles through Ru-catalyzed C-H mono- and dihydroxylation of anilides has been developed with a new directing group strategy. The reaction demonstrates excellent reactivity, regioselectivity, good functional group tolerance, and high yields.

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