名称:
Design and synthesis of novel chiral dihydroimidazolium cyclophanes as N-heterocyclic carbene precatalysts
摘要:
A series of novel diphenyl ethylenediamine (DPEN) derived C-2 symmetric dihydroimidazolium cyclophanes were designed and synthesized as organo NHC precatalysts. The resultant organo NHC-catalyzed reactions with superior enantioselectivity than traditional C-2 dihydroimidazolidine NHCs as exemplified by NHC-catalyzed asymmetric intramolecular Stetter reactions. (C) 2012 Elsevier Ltd. All rights reserved.
DOI:
10.1016/j.tetlet.2012.09.116