Benzenesulfonic acid, 4-methyl-, compd. with pyridine (1:1) → N-{1-[(4-Oxopiperidin-1-yl)carbonyl]-5-[4-(trifluoromethyl)phenyl]piperidin-3-yl}cyclopentanecarboxamide

Participants

Reaction Steps

14.3 mg of pyridinium p-toluenesulphonate (0.057 mmol) were added to a solution of the acetal from Example 63A (97.2 mg, 0.191 mmol) in 5.5 ml of acetone/water (10:1), and the mixture was stirred under reflux overnight. Another 14.3 mg of pyridinium p-toluenesulphonate (0.057 mmol) were added, and the mixture was stirred under reflux for another night. The mixture was then cooled, and the precipitate formed was filtered off. Yield: 66.2 mg (74% of theory)

Provenance & Evidence