2,3-Difluoroaniline Chemical Properties

Boiling point:

68-69 °C

Density 

1.274 g/mL at 25 °C (lit.)

refractive index 

n20/D 1.514(lit.)

Flash point:

160 °F

storage temp. 

Keep in dark place,Inert atmosphere,Room temperature

pka

2.19±0.10(Predicted)

form 

Liquid

Specific Gravity

1.274

color 

Clear light orange

BRN 

2716500

InChI

InChI=1S/C6H5F2N/c7-4-2-1-3-5(9)6(4)8/h1-3H,9H2

InChIKey

YCCQGFYAVUTQFK-UHFFFAOYSA-N

SMILES

C1(N)=CC=CC(F)=C1F

CAS DataBase Reference

4519-40-8(CAS DataBase Reference)

Safety Information

Hazard Codes 

Xn,Xi

Risk Statements 

20/21/22-36/37/38

Safety Statements 

26-27-28-36/37/39-36

RIDADR 

2941

WGK Germany 

3

Hazard Note 

Irritant

HazardClass 

6.1

PackingGroup 

III

HS Code 

29214200

MSDS

• Language:English Provider:2,3-Difluorobenzenamine
• Language:English Provider:SigmaAldrich
• Language:English Provider:ACROS
• Language:English Provider:ALFA

2,3-Difluoroaniline Usage And Synthesis

Chemical Properties

clear light orange liquid

Uses

2,3-Difluoroaniline was used in the synthesis of ethyl 2-arylamino-4-trifluoromethylpyrimidine-5-carboxylate.

Uses

intermediate for liquid crystal and drugs

Synthesis

The general procedure for the synthesis of 2,3-difluoroaniline from 2,3-dibromo-5,6-difluoronitrobenzene was as follows: first, 0.638 g (2.01 mmol) of 2,3-dibromo-5,6-difluoronitrobenzene was dissolved in 4 mL of methanol. Subsequently, 48.4 mg of 10% Pd/C (50% wet) catalyst and 6.2 mg (0.06 mmol) of triethylamine were added to the solution. The atmosphere in the reaction vessel was replaced with hydrogen and the reaction mixture was stirred at 50 °C for 2 h under slight hydrogen pressure. The reaction mixture was analyzed by HPLC, which showed the presence of 2.2 area% of 2,3-dibromo-5,6-difluoroaniline as a residual intermediate. The reaction was continued under the same conditions for 0.5 hours. After completion of the reaction, the catalyst was removed by filtration. The resulting liquid was quantitatively analyzed by HPLC and the yield of 2,3-difluoroaniline was measured to be 93% and the intermediate 2,3-dibromo-5,6-difluoroaniline was completely consumed.

References

[1] Patent: EP2940002, 2015, A1. Location in patent: Paragraph 0075

2,3-Difluoroaniline(4519-40-8)Related Product Information

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