Preparation of 3-methylpiperidine

摘要

5-Membered, 6-membered or 7-membered cyclic imines are prepared by hydrogenating a C2-C4-alkanedinitrile in the liquid phase, at from 180 DEG to 300 DEG C. and under superatmospheric pressure, in the presence of a catalyst, by a process in which an iron catalyst obtained by reduction of an iron oxide with hydrogen at