Water → HCID 14032637, compound

Participants

Reaction Steps

To a mixture of cyanogen bromide (5.76 g, 0.054 moles) and K2CO3 (8.82 g, 0.064 moles) in dimethylsulfoxide (110 ml) was added 3-(1-methyl-4-piperidinyl)-1-phenyl-1H-indazole (14.8 g, 0.051 moles) of Example 66 in dimethylsulfoxide (DMSO) (15 ml). The reaction was stirred at ambient temperature for 16 hours and then poured into water and extracted with ether. A precipitate formed in the ether which was collected and then the ether was concentrated to yield additional product. The crude product (11.5 g) was recrystallized three times from isopropyl alcohol which yielded 6.75 g (37%) of 4-(1-phenyl-1H-indazol-3-yl)-piperidine-1-carbonitrile, m.p. 124°-125° C.

Provenance & Evidence