1-Methylpiperazine → Benzonitrile, 2-fluoro-6-(4-methyl-1-piperazinyl)-
Reaction equation
F[C:2]1[CH:9]=[CH:8][CH:7]=[C:6]([F:10])[C:3]=1[C:4]#[N:5].[CH3:11][N:12]1[CH2:17][CH2:16][NH:15][CH2:14][CH2:13]1>>[F:10][C:6]1[CH:7]=[CH:8][CH:9]=[C:2]([N:15]2[CH2:16][CH2:17][N:12]([CH3:11])[CH2:13][CH2:14]2)[C:3]=1[C:4]#[N:5]Participants
3
Procedure
2,6-Difluorobenzonitrile is reacted with N-methyl piperazine following the procedure of Example 5. The reaction mixture is extracted with methylene chloride after addition of water. The methylene chloride is extracted with dilute HCl which is basified and extracted with methylene chloride. The resulting crude oil after evaporation is taken in ethanol and i-PrOH-HCl is added to give the title compound as the hydrochloride salt, 1.4 g m.p. 245°-247° C.
Workup
- extractionThe reaction mixture is extracted with methylene chloride
- additionafter addition of water
- extractionThe methylene chloride is extracted with dilute HCl which
- extractionextracted with methylene chloride