4-Hydroxy-4-phenylcyclohexan-1-one → N-(2-{[3-(Fluoromethyl)-1-(4-hydroxy-4-phenylcyclohexyl)pyrrolidin-3-yl]amino}-2-oxoethyl)-3-(trifluoromethyl)benzamide

Participants

Reaction Steps

100 mg (0.53 mmol) of 4-hydroxy -4-phenylcyclohexanone and 184 mg (0.53 mmol) of N-(2-{[3-(fluoromethyl)pyrrolidin-3-yl]amino}-2-oxoethyl)-3-(trifluoromethyl)benzamide were dissolved in 10 mL of methylene chloride. To the solution was added 221 mg (1.06 mmol) of sodium triacetoxyborohydride. The reaction mixture was stirred at room temperature for 2 h. Direct chromatography on silica gel gave the final desired product 41 mg (top spot on TLC and first peak on HPLC, yield: 16.7%, MS: 522 (M+1)+) and the other isomer 51 mg (second peak on HPLC, yield: 20%, MS: 522 (M+1)+).

Provenance & Evidence