Rh(II) catalysts with 4-hydroxyproline-derived ligands
摘要:
Three new chiral Rh(II) catalysts with 4-hydroxyproline-derived ligands have been synthesised through a short and efficient synthetic route. The catalysts give good yields and ees in C-H insertion and cyclopropanation reactions, and their properties indicate an all-up reactive conformation of proline-and 4-hydroxyproline-derived Rh( II) catalysts. (C) 2010 Elsevier Ltd. All rights reserved.