Stereoselective Reactions of Acyclic Allylic Phosphates with Organocopper Reagents
作者:Jennifer L. Belelie、J. Michael Chong
DOI:10.1021/jo0104431
日期:2001.8.1
the size of R(2) affected both the regioselectivity and stereoselectivity of the displacement. Larger R(2) groups gave higher regio- and stereoselectivities: with R(2) = 3-pentyl, >98% S(N)2' regioselectivity and >98% anti stereoselectivity were observed. Bn(2)CuCNLi(2) gave stereoselectivities comparable to those observed with n-Bu(2)CuCNLi(2) but t-Bu(2)CuCNLi(2) exhibited much lower diastereofacial