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4519-40-8

Basic Information
CAS No.: 4519-40-8
Name: 2,3-Difluoroaniline
Article Data: 7
Cas Database
Molecular Structure:
Molecular Structure of 4519-40-8 (2,3-Difluoroaniline)
Formula: C6H5F2N
Molecular Weight: 129.109
Synonyms: Aniline,2,3-difluoro- (7CI,8CI);2,3-Difluorophenylamine;Benzenamine,2,3-difluoro-;
EINECS: 224-847-2
Density: 1.289 g/cm3
Melting Point: N/A
Boiling Point: 176.6 °C at 760 mmHg
Flash Point: 71.1 °C
Solubility: N/A
Appearance: clear light orange liquid
Hazard Symbols: HarmfulXn, IrritantXi
Risk Codes: 20/21/22-36/37/38
Safety: 26-27-28-36/37/39
Transport Information: UN 2941
PSA: 26.02000
LogP: 2.12820
Synthetic route

2,3-dibromo-5,6-difluoroaniline

4519-40-8

2,3-difluoroanilline

Conditions
ConditionsYield
With palladium 10% on activated carbon; hydrogen; triethylamine In methanol at 50℃; for 3h;98%
1481-57-8

1,2-dibromo-4,5-difluoro-3-nitrobenzene

4519-40-8

2,3-difluoroanilline

Conditions
ConditionsYield
With palladium 10% on activated carbon; hydrogen; triethylamine In methanol at 50℃; for 2.5h; Temperature;93%

1-(2,3-difluorophenyl)pyrrolidine-2,5-dione

4519-40-8

2,3-difluoroanilline

Conditions
ConditionsYield
With hydrogenchloride In water for 1h; Reflux;89.1%

1-(6-amino-2,3-difluorophenyl)pyrrolidine-2,5-dione

4519-40-8

2,3-difluoroanilline

Conditions
ConditionsYield
Stage #1: 1-(6-amino-2,3-difluorophenyl)pyrrolidine-2,5-dione With sulfuric acid; acetic acid; sodium nitrite at 5℃; for 0.5h;
Stage #2: With ethanol; zinc for 1.5h; Reflux;
83.6%
Multi-step reaction with 2 steps
1.1: sodium nitrite; sulfuric acid; acetic acid / 0.5 h / 5 °C
1.2: 1 h / 50 °C
2.1: hydrogenchloride / water / 1 h / Reflux
View Scheme
87-61-6

1,2,3-trichlorobenzene

A

4519-40-8

2,3-difluoroanilline

B

5509-65-9

2,6-difluoroaniline

Conditions
ConditionsYield
With ammonium hydroxide; cesium fluoride; copper(I) oxide 1.) N,N'-dimethylethyleneurea, 250 deg C (bomb), 12 h, 2.) 170 deg C (bomb), 24 h; Yield given. Multistep reaction. Further byproducts given. Yields of byproduct given;
With ammonium hydroxide; cesium fluoride; copper(I) oxide 1.) N,N'-dimethylethyleneurea, 250 deg C (bomb), 12 h, 2.) 160 deg C (bomb), 24 h; Yield given. Multistep reaction. Further byproducts given. Yields of byproduct given;

difluorotrichloronitrobenzene

67-63-0

isopropyl alcohol

4519-40-8

2,3-difluoroanilline

Conditions
ConditionsYield
With hydrogen; sodium formate; palladium on charcoal
36556-39-5

difluorodichlorobenzene

1435-43-4

1-chloro-3,5-difluorobenzene

136272-32-7

3,4,5-trichloro-2,6-difluoronitrobenzene

136272-33-8

1,2,4-trichloro-3,5-difluoronitrobenzene

4519-40-8

2,3-difluoroanilline

Conditions
ConditionsYield
With sulfuric acid; nitric acid; sodium acetate; chlorine; aluminium trichloride; palladium on charcoal In methanol; dichloromethane
367-11-3

ortho-difluorobenzene

4519-40-8

2,3-difluoroanilline

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: iron; bromine / 4.83 h / 20 - 50 °C
2: sulfuric acid; nitric acid / water / 1.5 h / 20 - 35 °C
3: palladium 10% on activated carbon; hydrogen; triethylamine / methanol / 2.5 h / 50 °C
View Scheme
Multi-step reaction with 4 steps
1: iron; bromine / 4.83 h / 20 - 50 °C
2: sulfuric acid; nitric acid / water / 1.5 h / 20 - 35 °C
3: iron; calcium chloride; ethanol; water / 3.2 h / 55 °C
4: palladium 10% on activated carbon; hydrogen; triethylamine / methanol / 3 h / 50 °C
View Scheme
64695-78-9

1,2-difluoro-4,5-dibromobenzene

4519-40-8

2,3-difluoroanilline

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: sulfuric acid; nitric acid / water / 1.5 h / 20 - 35 °C
2: palladium 10% on activated carbon; hydrogen; triethylamine / methanol / 2.5 h / 50 °C
View Scheme
Multi-step reaction with 3 steps
1: sulfuric acid; nitric acid / water / 1.5 h / 20 - 35 °C
2: iron; calcium chloride; ethanol; water / 3.2 h / 55 °C
3: palladium 10% on activated carbon; hydrogen; triethylamine / methanol / 3 h / 50 °C
View Scheme

1,2-dichloro-4,5-difluoro-3-nitrobenzene

A

4519-40-8

2,3-difluoroanilline

B

2,3-dichloro-5,6-difluoroaniline

Conditions
ConditionsYield
With palladium 10% on activated carbon; hydrogen; triethylamine In methanol at 45℃; for 4.2h; Temperature;
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Chemistry


IUPAC Name: 2,3-Difluoroaniline
Molecular Formula: C6H5F2N
Molecular Weight: 129.11 g/mol
SMILES: c1(c(N)cccc1F)F
InChI: InChI=1/C6H5F2N/c7-4-2-1-3-5(9)6(4)8/h1-3H,9H2 
EINECS: 224-847-2
Product Categories: Other fluorin-contained compounds; Fluorobenzene Series; Fluorobenzene; Amines and Anilines; Anilines, Aromatic Amines and Nitro Compounds; Aniline; Miscellaneous; Amines; C2 to C6; Nitrogen Compounds
Index of Refraction: 1.52 
Molar Refractivity: 30.47 cm3 
Molar Volume: 100.1 cm3 
Polarizability: 12.08×10-24 cm
Surface Tension: 37.2 dyne/cm 
Density: 1.289 g/cm
Flash Point: 71.1 °C 
Enthalpy of Vaporization: 41.29 kJ/mol 
Boiling Point: 176.6 °C at 760 mmHg 
Vapour Pressure of 2,3-Difluoroaniline (CAS NO.4519-40-8): 1.08 mmHg at 25 °C

Uses

 2,3-Difluoroaniline (CAS NO.4519-40-8) is used as intermediate for liquid crystal and drugs.

Safety Profile

Hazard Codes: HarmfulXn,IrritantXi
Risk Statements: 20/21/22-36/37/38 
R20/21/22:Harmful by inhalation, in contact with skin and if swallowed. 
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements: 26-27-28-36/37/39-36 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S27:Take off immediately all contaminated clothing. 
S28:After contact with skin, wash immediately with plenty of soap-suds. 
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection. 
S36:Wear suitable protective clothing.
RIDADR: 2941
WGK Germany: 3
Hazard Note: Irritant
HazardClass: 6.1
PackingGroup of 2,3-Difluoroaniline (CAS NO.4519-40-8): III

Specification

 2,3-Difluoroaniline (CAS NO.4519-40-8), its Synonyms are 2,3-Difluoroaniline, 98% ; 2,3-Difluoroaniline 98% ; 2,3-Difluorophenylamine ; Benzenamine, 2,3-difluoro- . It is clear light orange liquid.