Pyridine → HCID 15859007, compound

Participants

Reaction Steps

0.9 g (1.7 mmol) of 2-cyclopentyl-4-(3,4-difluorophenyl)-7,7-dimethyl-3-(4-trifluoromethylbenzoyl)-4,6,7,8-tetrahydro-1H-quinolin-5-one were oxidized at room temperature within one hour to give the pyridine, using 4.5 g of manganese dioxide (activated) in 25 ml of methylene chloride. The manganese dioxide was separated off and the methylene chloride was distilled off, and the mixture was then filtered off with suction using petroleum ether. This gave 0.8 g of crystals of melting, point: 210-212° C.

Provenance & Evidence