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4-Amino-5-chloro-2,3-dihydrobenzofuran-7-carboxylic acid

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Name

4-Amino-5-chloro-2,3-dihydrobenzofuran-7-carboxylic acid

EINECS 1592732-453-0
CAS No. 123654-26-2 Density 1.567 g/cm3
PSA 72.55000 LogP 2.13650
Solubility N/A Melting Point 242 °C(dec.)
Formula C9H8ClNO3 Boiling Point 406.498 °C at 760 mmHg
Molecular Weight 213.62 Flash Point 199.643 °C
Transport Information N/A Appearance N/A
Safety Risk Codes N/A
Molecular Structure Molecular Structure of 123654-26-2 (4-Amino-5-chloro-2,3-dihydro-7-benzofurancarboxylic acid) Hazard Symbols N/A
Synonyms

4-Amino-5-chloro-2,3-dihydro-1-benzofuran-7-carboxylic acid;

Article Data 6

4-Amino-5-chloro-2,3-dihydrobenzofuran-7-carboxylic acid Synthetic route

4-acetylamino-5-chloro-2,3-dihydrobenzofuran-7-carboxylic acid sodium salt

123654-26-2

4-amino-5-chloro-2,3-dihydrobenzo[b]furan-7-carboxylic acid

Conditions
ConditionsYield
With sodium hydroxide In water at 100℃; for 3h;97%
Multi-step reaction with 2 steps
1: sulfuric acid / 8 h / 10 °C / Reflux
2: water; sodium hydroxide / methanol / 2 h / Reflux
View Scheme
143878-29-9

4-acetamido-5-chloro-2,3-dihydrobenzofuran-7-carboxylic acid methyl ester

123654-26-2

4-amino-5-chloro-2,3-dihydrobenzo[b]furan-7-carboxylic acid

Conditions
ConditionsYield
With sodium hydroxide In methanol for 2h; Heating;90.3%
With 1-methoxy-2-propanol; water; sodium hydroxide at 90℃; for 8h;89.8%
With water; sodium hydroxide for 5h; Reagent/catalyst;89%
Multi-step reaction with 3 steps
1: water; sodium hydroxide / methanol / 2.17 h / 25 - 55 °C
2: sulfuric acid / 8 h / 10 °C / Reflux
3: water; sodium hydroxide / methanol / 2 h / Reflux
View Scheme
4093-28-1

methyl 4-acetamido-2-hydroxybenzoate

123654-26-2

4-amino-5-chloro-2,3-dihydrobenzo[b]furan-7-carboxylic acid

Conditions
ConditionsYield
Multi-step reaction with 8 steps
1: 95.5 percent / K2CO3, tetra-n-butylammonium chloride / acetonitrile / 22 h / Heating
2: 94.9 percent / N-methylpyrrolidone / 1.5 h / Heating
3: OsO4 / diethyl ether; H2O / 0.17 h / 20 - 25 °C
4: NaIO4 / diethyl ether; H2O / 12 h / 20 - 25 °C
5: NaBH4 / methanol / 2 h / 20 - 25 °C
6: 86.7 percent / diethyl azodicarboxylate, Ph3P / tetrahydrofuran / 1 h / 20 - 25 °C
7: NCS / dimethylformamide / 3 h / 70 °C
8: 90.3 percent / 4N NaOH / methanol / 2 h / Heating
View Scheme
Multi-step reaction with 5 steps
1.1: sulfuryl dichloride / ethyl acetate / 2 h / -5 - 0 °C
2.1: N-Bromosuccinimide / N,N-dimethyl-formamide / 20 °C
3.1: potassium carbonate / N,N-dimethyl acetamide / 0.5 h / 20 °C
3.2: 5 h / 50 °C
4.1: zinc / N,N-dimethyl acetamide / 22 h / 20 - 50 °C / Inert atmosphere
4.2: 0.5 h / 70 °C / Inert atmosphere
5.1: sodium hydroxide; 1-methoxy-2-propanol; water / 8 h / 90 °C
View Scheme
91958-13-3

methyl 2-allyloxy-4-acetylaminobenzoate

123654-26-2

4-amino-5-chloro-2,3-dihydrobenzo[b]furan-7-carboxylic acid

Conditions
ConditionsYield
Multi-step reaction with 7 steps
1: 94.9 percent / N-methylpyrrolidone / 1.5 h / Heating
2: OsO4 / diethyl ether; H2O / 0.17 h / 20 - 25 °C
3: NaIO4 / diethyl ether; H2O / 12 h / 20 - 25 °C
4: NaBH4 / methanol / 2 h / 20 - 25 °C
5: 86.7 percent / diethyl azodicarboxylate, Ph3P / tetrahydrofuran / 1 h / 20 - 25 °C
6: NCS / dimethylformamide / 3 h / 70 °C
7: 90.3 percent / 4N NaOH / methanol / 2 h / Heating
View Scheme
110751-41-2

methyl 2-hydroxy-3-allyl-4-acetaminobenzoate

123654-26-2

4-amino-5-chloro-2,3-dihydrobenzo[b]furan-7-carboxylic acid

Conditions
ConditionsYield
Multi-step reaction with 6 steps
1: OsO4 / diethyl ether; H2O / 0.17 h / 20 - 25 °C
2: NaIO4 / diethyl ether; H2O / 12 h / 20 - 25 °C
3: NaBH4 / methanol / 2 h / 20 - 25 °C
4: 86.7 percent / diethyl azodicarboxylate, Ph3P / tetrahydrofuran / 1 h / 20 - 25 °C
5: NCS / dimethylformamide / 3 h / 70 °C
6: 90.3 percent / 4N NaOH / methanol / 2 h / Heating
View Scheme
202664-83-3

4-(acetylamino)-2-hydroxy-3-(2-oxoethyl)benzoic acid methyl ester

123654-26-2

4-amino-5-chloro-2,3-dihydrobenzo[b]furan-7-carboxylic acid

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: NaBH4 / methanol / 2 h / 20 - 25 °C
2: 86.7 percent / diethyl azodicarboxylate, Ph3P / tetrahydrofuran / 1 h / 20 - 25 °C
3: NCS / dimethylformamide / 3 h / 70 °C
4: 90.3 percent / 4N NaOH / methanol / 2 h / Heating
View Scheme
202664-85-5

methyl 4-acetylamino-2-hydroxy-3-(2-hydroxyethyl)benzoate

123654-26-2

4-amino-5-chloro-2,3-dihydrobenzo[b]furan-7-carboxylic acid

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: 86.7 percent / diethyl azodicarboxylate, Ph3P / tetrahydrofuran / 1 h / 20 - 25 °C
2: NCS / dimethylformamide / 3 h / 70 °C
3: 90.3 percent / 4N NaOH / methanol / 2 h / Heating
View Scheme
Multi-step reaction with 5 steps
1.1: triphenylphosphine / tetrahydrofuran / 0.25 h / 25 - 30 °C
1.2: 1 h / 10 - 30 °C
2.1: N-chloro-succinimide / N,N-dimethyl-formamide / 2.17 h / 25 - 75 °C
3.1: water; sodium hydroxide / methanol / 2.17 h / 25 - 55 °C
4.1: sulfuric acid / 8 h / 10 °C / Reflux
5.1: water; sodium hydroxide / methanol / 2 h / Reflux
View Scheme
149466-67-1

methyl 4-acetylamino-2,3-dihydrobenzo[b]furan-7-carboxylate

123654-26-2

4-amino-5-chloro-2,3-dihydrobenzo[b]furan-7-carboxylic acid

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: NCS / dimethylformamide / 3 h / 70 °C
2: 90.3 percent / 4N NaOH / methanol / 2 h / Heating
View Scheme
Multi-step reaction with 4 steps
1: N-chloro-succinimide / N,N-dimethyl-formamide / 2.17 h / 25 - 75 °C
2: water; sodium hydroxide / methanol / 2.17 h / 25 - 55 °C
3: sulfuric acid / 8 h / 10 °C / Reflux
4: water; sodium hydroxide / methanol / 2 h / Reflux
View Scheme
Multi-step reaction with 2 steps
1: N-chloro-succinimide / N,N-dimethyl-formamide / 2 h / 65 °C
2: water; sodium hydroxide / 5 h
View Scheme

4-Acetylamino-3-(2,3-dihydroxy-propyl)-2-hydroxy-benzoic acid methyl ester

123654-26-2

4-amino-5-chloro-2,3-dihydrobenzo[b]furan-7-carboxylic acid

Conditions
ConditionsYield
Multi-step reaction with 5 steps
1: NaIO4 / diethyl ether; H2O / 12 h / 20 - 25 °C
2: NaBH4 / methanol / 2 h / 20 - 25 °C
3: 86.7 percent / diethyl azodicarboxylate, Ph3P / tetrahydrofuran / 1 h / 20 - 25 °C
4: NCS / dimethylformamide / 3 h / 70 °C
5: 90.3 percent / 4N NaOH / methanol / 2 h / Heating
View Scheme

7-bromo-5-chloro-2,3-dihydro-4-benzofuranamine

124-38-9

carbon dioxide

123654-26-2

4-amino-5-chloro-2,3-dihydrobenzo[b]furan-7-carboxylic acid

Conditions
ConditionsYield
With n-butyllithium In tetrahydrofuran; hexane; water1.1 parts (32.2%)

4-Amino-5-chloro-2,3-dihydrobenzofuran-7-carboxylic acid Specification

The 4-Amino-5-chloro-2,3-dihydrobenzofuran-7-carboxylic acid, with the CAS registry number 123654-26-2, is also known as 4-Amino-5-chloro-2,3-dihydro-7-benzofurancarboxylic acid. This chemical's molecular formula is C9H8ClNO3 and molecular weight is 213.02. What's more, both its IUPAC name and systematic name are the same which is called 4-Amino-5-chloro-2,3-dihydro-1-benzofuran-7-carboxylic acid.

Physical properties about 4-Amino-5-chloro-2,3-dihydrobenzofuran-7-carboxylic acid are: (1)ACD/LogP: 1.898; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 0.82; (4)ACD/LogD (pH 7.4): -0.83; (5)ACD/BCF (pH 5.5): 1.37; (6)ACD/BCF (pH 7.4): 1.00; (7)ACD/KOC (pH 5.5): 21.63; (8)ACD/KOC (pH 7.4): 1.00; (9)#H bond acceptors: 4; (10)#H bond donors: 3; (11)#Freely Rotating Bonds: 2; (12)Polar Surface Area: 72.55 Å2; (13)Index of Refraction: 1.679; (14)Molar Refractivity: 51.482 cm3; (15)Molar Volume: 136.328 cm3; (16)Polarizability: 20.409×10-24cm3; (17)Surface Tension: 75.526 dyne/cm; (18)Density: 1.567 g/cm3; (19)Flash Point: 199.643 °C; (20)Enthalpy of Vaporization: 69.409 kJ/mol; (21)Boiling Point: 406.498 °C at 760 mmHg; (22)Vapour Pressure: 0 mmHg at 25 °C.

You can still convert the following datas into molecular structure:
(1) SMILES: Clc2c(c1c(OCC1)c(c2)C(=O)O)N
(2) InChI: InChI=1S/C9H8ClNO3/c10-6-3-5(9(12)13)8-4(7(6)11)1-2-14-8/h3H,1-2,11H2,(H,12,13)
(3) InChIKey: KRMUVKSAOVLXLF-UHFFFAOYSA-N

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