Catalytic Asymmetric [2,3]-Sigmatropic Rearrangement of Sulfur Ylides Generated from Copper(I) Carbenoids and Allyl Sulfides
作者:Xiaomei Zhang、Zhaohui Qu、Zhihua Ma、Weifeng Shi、Xianglin Jin、Jianbo Wang
DOI:10.1021/jo025687f
日期:2002.8.1
Catalytic asymmetric sulfur ylide [2,3]-sigmatropic rearrangement of carbenoids generated from aryldiazoacetates has been investigated with a number of chiral Rh(II) and Cu(I) catalysts, and moderately high enantioselectivity (52-78% ee) can be achieved with Cu(MeCN)(4)PF(6)/2,2'-isopropylidenebis[(4S)-4-tert-butyl-2-oxazoline].
已经研究了使用多种手性Rh(II)和Cu(I)催化剂对由芳基重氮乙酸酯生成的类胡萝卜素进行催化的不对称丁二酸硫[2,3]-σ重排的现象,可以实现中等程度的高对映选择性(52-78%ee)与Cu(MeCN)(4)PF(6)/ 2,2'-亚丙基双[(4S)-4-叔丁基-2-恶唑啉]。