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ChemicalBook--->CAS DataBase List--->1138036-54-0

1138036-54-0

1138036-54-0 Structure

1138036-54-0 Structure
IdentificationBack Directory
[Name]

(2-Chloro-3-fluorophenyl)hydrazine hydrochloride
[CAS]

1138036-54-0
[Synonyms]

2-chloro-3-fluorophenylhydrazine.HCl
2-Chloro-3-fluoro hydrazine hydrochloride
(2-Chloro-3-fluorophenyl)hydrazine hydrochloride
Hydrazine, (2-chloro-3-fluorophenyl)-, hydrochloride (1:1)
[Molecular Formula]

C6H7Cl2FN2
[MDL Number]

MFCD18393091
[MOL File]

1138036-54-0.mol
[Molecular Weight]

197.03
Chemical PropertiesBack Directory
[storage temp. ]

under inert gas (nitrogen or Argon) at 2–8 °C
[Appearance]

Off-white to light yellow Solid
Safety DataBack Directory
[Symbol(GHS) ]


GHS07
[Signal word ]

Warning
[Hazard statements ]

H302-H315-H319-H335
[Precautionary statements ]

P280-P301+P310-P271
[HS Code ]

2928009090
Hazard InformationBack Directory
[Synthesis]

2-Chloro-3-fluoroaniline

21397-08-0

(2-Chloro-3-fluorophenyl)hydrazine hydrochloride

1138036-54-0

The general procedure for synthesizing (2-chloro-3-fluorophenyl)hydrazine hydrochloride from 2-chloro-3-fluoroaniline was as follows: referring to the method of Example 189, a concentrated hydrochloric acid (70 mL) solution of 2-chloro-3-fluoroaniline (5.0 g) was slowly added dropwise to an aqueous (10 mL) solution of sodium nitrite (3.1 g), and the reaction temperature was maintained at -20 °C. The reaction mixture was stirred continuously at this temperature for 1.5 hours. Subsequently, a concentrated hydrochloric acid (20 mL) solution of tin(II) chloride (13 g) was slowly added dropwise at -20 °C and the reaction mixture was warmed to 0 °C with continued stirring for 1 hour. Upon completion of the reaction, the mixture was filtered, and the resulting solid was washed sequentially with water and hexane, and finally dried under reduced pressure to afford the target product (2-chloro-3-fluorophenyl)hydrazine hydrochloride as a yellow powder (4.3 g, 64% yield). The product was characterized by 1H-NMR (DMSO-d6): δ 6.91-7.02 (2H, m), 7.32-7.40 (1H, m), 8.35 (1H, brs), 10.23 (2H, brs), no other proton signals were detected.

[References]

[1] Patent: US2009/156642, 2009, A1. Location in patent: Page/Page column 67
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