4-benzhydryl-2-(3,4-dimethoxy-benzyl)-2-methyl-piperazine-1-carboxylic acid ethyl ester 、
Lithium aluminium hydride 在
hydron;2,4,5,6-tetrafluorobenzene-1,3-diamine;dichloride 作用下,
以
四氢呋喃 为溶剂,
反应 4.0h,
以12.4 g (82 percent of theory) of 1-diphenylmethyl-3-methyl-3-(3,4-dimethoxybenzyl)-4-methyl-piperazine are obtained in the form of the dihydrochloride的产率得到4-benzhydryl-2-(3,4-dimethoxy-benzyl)-1,2-dimethyl-piperazine