Water → 3-Fluoro-2-hydrazinyl-5-(trifluoromethyl)pyridine
Reaction equation
O.[NH2:2][NH2:3].F[C:5]1[C:10]([F:11])=[CH:9][C:8]([C:12]([F:15])([F:14])[F:13])=[CH:7][N:6]=1.O>C(O)C>[F:11][C:10]1[C:5]([NH:2][NH2:3])=[N:6][CH:7]=[C:8]([C:12]([F:15])([F:14])[F:13])[CH:9]=1Participants
5
Reactant 3
Product 1
Reagents, catalysts & solvents 1
Procedure
To a solution of hydrazine hydrate (100%) (3.45 ml) in ethanol (150 ml) was added dropwise a solution of 2,3-difluoro-5-(trifluoromethyl)pyridine (4.45 g) in ethanol (50 ml) at room temperature, stirred at the same temperature for 2 hours, and then additionally stirred at 80° C. for 2 hours. Then, the mixture was allowed to cool, water was added thereto, and the organic solvent was evaporated in vacuo. The precipitated solid was collected by filtration, and washed with water to give 3-fluoro-5-(trifluoromethyl)pyridin-2-ylhydrazine as a white solid.