Ligand-Accelerated Asymmetric [1,2]-Stevens Rearrangment of Sulfur Ylides via Decomposition of Diazomalonates Catalyzed by Chiral Bisoxazoline/Copper Complex
作者:Jian-Ping Qu、Zheng-Hu Xu、Jian Zhou、Chun-Li Cao、Xiu-Li Sun、Li-Xin Dai、Yong Tang
DOI:10.1002/adsc.200800536
日期:2009.2
Abstractmagnified imageThe first example of catalytic asymmetric [1,2]‐Stevens rearrangement reaction of 1,3‐oxathiolanes with diazomalonates has been developed and up to 90% ee is achieved by the bisoxazoline 4e/copper(II) triflate [Cu(OTf)2] complex.