Synthesis of a novel sterically hindered chiral cyclic phosphoric acid derived from l-tartaric acid and application to the asymmetric catalytic Biginelli reaction
作者:Xiaoyun Hu、Rui Zhang、Jinsheng Xie、Zhongqiang Zhou、Zixing Shan
DOI:10.1016/j.tetasy.2016.11.014
日期:2017.1
A novel sterically hindered chiral cyclic phosphoric acid derived from L-tartaric acid was designed and synthesized based on highly regioselective cyclosulfitation of chiral 1,1,4,4-tetraphenylbutanetetraol. The asymmetric Biginelli reaction catalyzed by this newly synthesized chiral phosphoric acid was examined, and enantioselectivities up to 99% ee was obtained. (C) 2016 Elsevier Ltd. All rights reserved.