反应详情

A solution of 11.4 g of the product of Step B, 25 ml of benzene and 5.9 ml of ethyl chloroformate was refluxed for 3 hours and was then evaporated to dryness under reduced pressure. Excess ethyl chloroformate was entrained with benzene to obtain 11 g of ethyl 3-(3-methoxyphenyl)-1,2,5,6-tetrahydro-1-pyridine-carboxylate.

1. customwas then evaporated to dryness under reduced pressure