.alpha.-Cyanobenzylpiperazines represented by the formula ##SPC1## Or an acid addition salt thereof, wherein R.sub.1 is a halogen or 1-3C lower alkoxy, R.sub.2 and R.sub.3 are each hydrogen or 1-3C lower alkoxy, R.sub.4 is 1-3C lower alkyl, and R.sub.5 is hydrogen or 1-3C lower alkyl, which are produced by reacting an aromatic carbonyl compound with hydrogen cyanide or a salt thereof and N-alkoxycarbonyl piperazine or an acid addition salt thereof.
.alpha.-
氰基苯基
哌嗪,其
化学式为##
SPC1##或其酸盐加合物,其中R.sub.1是卤素或1-3C低烷氧基,R.sub.2和R.sub.3分别是氢或1-3C低烷氧基,R.sub.4是1-3C低烷基,R.sub.5是氢或1-3C低烷基,通过将芳香醛类化合物与
氢氰酸或其盐以及N-烷氧羰基
哌嗪或其酸盐加合物反应而制备。