One-pot Preparation of 1,2-Aminoalcohols or Pyrroles by CeCl3 · 7 H2O-mediated Barbier Reactions of N,N′-Bis[(S)-1-phenylethyl]ethanediimine
作者:Gianluca Martelli、Stefano Morri、Diego Savoia
DOI:10.1055/s-2002-19343
日期:——
1,2-Aminoalcohols or pyrroles were obtained from N,N’-bis[(S)-1-phenylethyl]ethanediimine by a one-pot procedure involving two Barbier additions of allylic and/or propargyl zinc reagents alternated with the hydrolysis of the unreacted imine function, followed by a cyclisation/dehydration sequence when a 1-amino-5-pentyne moiety was involved, all these steps being promoted by CeCl3·7 H2O.
1,2-氨基醇或吡咯是通过一锅法从 N,N'-双[(S)-1-苯乙基]乙二亚胺获得的,涉及烯丙基和/或炔丙基锌试剂的两次巴比尔加成,交替进行水解。未反应的亚胺官能团,然后是涉及 1-氨基-5-戊炔部分时的环化/脱水序列,所有这些步骤均由 CeCl3·7 H2O 促进。