Synthesis of New<i>C</i><sub>2</sub>-Symmetric Chiral Bisamides from (1<i>S</i>,2<i>S</i>)-Cyclohexane-1,2-dicarboxylic Acid
作者:Chan Zhou、Jiaxi Xu
DOI:10.1002/hlca.201400005
日期:2014.10
A series of new C2‐symmetric (1S,2S)‐cyclohexane‐1,2‐dicarboxamides was synthesized from (1S,2S)‐cyclohexane‐1,2‐dicarbonyl dichloride and N‐benzyl‐substituted aromatic amines, which were prepared from 2‐aminopyridine, 2‐chloroaniline, and 2‐aminophenol via imine formation with benzaldehyde and subsequent reduction with NaBH4. (1S,2S)‐N,N′‐Dibenzyl‐N,N′‐bis[2‐(benzyloxy)phenyl]cyclohexane‐1,2‐dicarboxamide
由(1 S,2 S)-环己烷-1,2-二羰基二氯化物和N-苄基取代的芳族胺合成了一系列新的C 2-对称的(1 S,2 S)-环己烷-1,2-二甲酰胺,由2-氨基吡啶,2-氯苯胺和2-氨基苯酚经亚胺与苯甲醛形成,然后经NaBH 4还原而制得。(1小号,2小号) - ñ,Ñ '-Dibenzyl- Ñ,Ñ ' -双[2-(苄氧基)苯基]环己烷-1,2-二羧酰胺转化为(1小号,2S)-N,N'-二苄基-N,N'-双(2-羟基苯基)环己烷-1,2-二甲酰胺通过在活性炭粉末上存在Pd(OH)2的条件下进行氢解而得。