Pyridine → 6-[1-Oxo-4-(4-phenyl-4-acetyl-1-piperidyl)butyl]-3,4-dihydrocarbostyril

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Reaction Steps

2.6 Grams of 6-(1-oxo-4-chlorobutyl)-3,4-dihydro-carbostyril, 12 g of pyridine and 2.7 g of 4-phenyl-4-acetyl-piperidine were mixed in 30 ml of dimethylformamide and stirred at 70°-80° C. for 7 hours. The reaction mixture was poured into 100 ml of 5%-sodium hydrogencarbonate aqueous solution and the organic layer was extracted with chloroform then the chloroform layer was washed with water, dried and chloroform was removed by distillation. The residue thus obtained was recrystallized from ethanol to obtain 6-[1-oxo-4-(4-phenyl-4-acetyl-1-piperidyl)butyl]-3,4-dihydrocarbostyril in light yellow plate-like crystals. Yield: 2.1 g.

Provenance & Evidence