Methanol → HCID 23285058, compound

Participants

Reaction Conditions

Reaction Steps

24 ml of a 1 N solution of boron tribromide in dichloromethane was dropwise added, at -40° C., to a solution of 1.0 g of 4-[N-methyl-N-(2-phenylethyl)amino]-1-[3-methoxy-4-(1,2,4-triazol-1-yl)benzoyl]piperidine in 20 ml of chloroform. The mixture was stirred overnight at that temperature and then returned to room temperature. The mixture was cooled to -30° C. and 10 ml of methanol was dropwise added thereto. The mixture was poured into ice water. The resulting mixture was made basic with a 25% aqueous sodium hydroxide solution and stirred for a while. The organic layer was separated, water-washed, and concentrated under reduced pressure. The residue was purified by a silica gel column chromatography (eluant: methylene chloride/methanol=50/1 to 9/1) and then converted into a hydrochloride to obtain 0.42 g of 4-[N-methyl-N-(2-phenylethyl)amino]-1-[3-hydroxy-4-(1,2,4-triazol-1-yl)benzoyl]piperidine hydrochloride as a white amorphous.

Provenance & Evidence