反应详情

A mixture of 4.95 mL (40 mmol) of 1-acetyl-4-piperidinone, 3.64 mL (44 mmol) of pyrrolidine, 15 mL of toluene and a catalytic quantity of p-toluenesulfonic acid was heated for 12 h with refluxing on a water separator. After removal of the solvent under a vacuum, 7.7 g (99% of theoretical) of the desired product 1-(4-pyrrolidin-1-yl-3,6-dihydro-2H-pyridin-1-yl)-ethanone (A) were obtained in the form of a brown-red oil.

1. customAfter removal of the solvent under a vacuum, 7.7 g (99% of theoretical) of the desired product 1-(4-pyrrolidin-1-yl-3,6-dihydro-2H-pyridin-1-yl)-ethanone (A)
2. customwere obtained in the form of a brown-red oil