Asymmetric synthesis and stereochemistry of chiral cis- and trans-3-alkyl-4-aminopiperidines
作者:G. V. Grishina、E. R. Luk’yanenko、A. A. Borisenko、M. Yu. Antipin
DOI:10.1007/s10593-012-1052-9
日期:2012.8
obtained by diastereoselective synthesis from 1-methyl- and 1-benzyl-4-[(S)-1-phenylethyl]iminopiperidines, using the following reaction sequence: metalation with lithium diethylamide, alkylation with alkyl halides, and hydride reduction or hydrogenation over Raney nickel. The steric direction of the reaction, three-dimensional structure, preferred conformation, and absolute configuration of the resultant
手性非外消旋3-取代的顺式和反式-4-氨基哌啶是苯胺哌啶镇痛药的前体,是通过非对映选择性合成从1-甲基-和1-苄基-4-[(S)-1-苯基乙基]亚氨基哌啶中合成的。以下反应顺序:用二乙酰胺锂金属化,用烷基卤化物进行烷基化,以及在阮内镍上进行氢化物还原或氢化。确定了反应的空间方向,三维结构,优选的构象和所得氨基哌啶的绝对构型。