Phosgene → Ethyl 1-(chlorocarbonyl)piperidine-2-carboxylate

Participants

Reaction Steps

A mixture of 2-ethoxycarbonylhexahydropyridine (5 g, 32 mmol) and triethylamine (3.2 g, 32 mmol) in 15 ml of benzene is added dropwise to phosgene, with ice-bath cooling. After the addition is complete, the mixture is allowed to warm to RT and is stirred for 2 hours. The reaction is diluted with benzene to about 150 ml, washed with water (3X), dried over sodium sulfate and stripped to give N-chlorocarbonyl-2-ethoxycarbonylhexahydropyridine.

Provenance & Evidence