反应详情

A solution of 36.4 g (0.131 mole) of ethyl 2-(1-benzyl-4-piperidyloxy)-acetate in 200 ml of absolute ethanol was reacted with hydrogen at 50° C in the presence of 3.5 g of 5% palladized charcoal until the theoretical amount of hydrogen was absorbed and the catalyst was filtered off. The ethanol was evaporated off and the residue was distilled to obtain 18.2 g (74% yield) of ethyl 2-(4-piperidyloxy)-acetate as a clear oil boiling at 102° C at 0.1 mm Hg and having a refractive index nD20 = 1.4665.

1. customwas absorbed
2. filtrationthe catalyst was filtered off
3. customThe ethanol was evaporated off
4. distillationthe residue was distilled