反应详情

To a solution of 1-(p-chlorobenzyl)-3-hydroxymethyl piperidine (4.0 g, 19 mmol) in THF (40 ml) were added successively triphenylphosphine (5.60 g, 21.3 mmol), phthalimide (3.14 g, 21.4 mmol) and diethyl azodicarboxylate (3.4 ml, 21 mmol) under ice-cooling and the mixture was stirred for 1.5 hours. The solvent was distilled off from the reaction mixture under reduced pressure to give 10.52 g of crude 1-(p-chlorobenzyl)-3-phthalimidomethylpiperidine. This compound was used for the subsequent reaction without purification.

1. temperaturecooling
2. distillationThe solvent was distilled off from the reaction mixture under reduced pressure