Generation and stereoselective transformations of 3-phenylcyclopropene
作者:Andrey E. Sheshenev、Mark S. Baird、Anna K. Croft、Ivan G. Bolesov
DOI:10.1016/j.tet.2009.09.098
日期:2009.11
generation of 3-phenylcyclopropenes is described. Reaction of these compounds with a range of dienophiles and dipolarophiles led to the stereoselective formation of [4+2]- and [3+2]-cycloadducts, which were exclusively exo-3-phenyl-cis-1,2-disubstituted cyclopropanes. Efficient trapping of 1-lithio-3-phenylcyclopropene with different electrophiles is also discussed. Ab initio calculations suggest that