An improved process for preparing fenoctimine, which is 4-(diphenylmethyl)-1-[(octylimino)methyl]piperidine by: (1) reacting dimethylformamide with dimethyl sulfate to form a complex; (2) reacting the resultant dimethylformamide/dimethyl sulfate complex with n-octylamine and optionally with dimethylamine; (3) thereafter treating the reaction with aqueous base to form N,N-dimethyl-N'-octyl-formamidine; and (4) reacting said formamidine, without need for further purification, with 4-(diphenylmethyl) piperidine to obtain 4-(diphenylmethyl)-1-[(octylimino)-methyl]piperidine.
一种改进的制备fenoctimine的方法,其中fenoctimine是4-(二苯甲基)-1- [(辛基亚甲基)]
哌啶,其步骤为:(1)将二甲基甲酰胺与
二甲基硫酸酯反应形成复合物;(2)将所得的二甲基甲酰胺/
二甲基硫酸酯复合物与正
辛胺和必要时与
二甲胺反应;(3)然后用
水基处理反应以形成N,N-二甲基-N'-辛基-甲酰胺;(4)将该甲酰胺与4-(二苯甲基)
哌啶反应,无需进一步纯化,即可获得4-(二苯甲基)-1- [(辛基亚甲基)]
哌啶。