Synthesis of novel chiral imidazolium-based ionic liquids derived from isosorbide and their applications in asymmetric aza Diels–Alder reaction
作者:Olivier Nguyen Van Buu、Audrey Aupoix、Giang Vo-Thanh
DOI:10.1016/j.tet.2009.01.055
日期:2009.3
A novel family of chiral imidazolium-based ionic liquids containing a Chiral moiety and a free hydroxyl function has been designed and synthesized using isosorbide as a biorenewable substrate. These chiral ionic liquids were found to catalyze the aza Diels-Alder reaction to give good yields and moderate diastereoselectivities. Chiral ionic liquids are recycled while their efficiency is preserved. (C) 2009 Elsevier Ltd. All rights reserved.