Chiral polyethers derived from BINOL and ECH as highly enantioselective and efficient catalysts for the borane reduction of prochiral ketones
作者:An-Lin Zhang、Zeng-da Yu、Li-Wen Yang、Nian-Fa Yang、Dan Peng
DOI:10.1016/j.molcata.2015.01.007
日期:2015.3
Two novel polyethers derived from BINOL were synthesized and used to induce the enantioselective borane reduction of prochiral ketones. The polyethers gave the expected secondary alcohols with up to 98% yields and over 99% ee values. The recovered polyethers could be reused for many times to induce the enantioselective reduction of prochiral ketones without losing their enantioselective induction ability. (C) 2015 Elsevier B.V. All rights reserved.