Palladium-Catalyzed Diastereo- and Enantioselective Formal [3 + 2]-Cycloadditions of Substituted Vinylcyclopropanes
作者:Barry M. Trost、Patrick J. Morris、Simon J. Sprague
DOI:10.1021/ja309003x
日期:2012.10.24
We describe a palladium-catalyzeddiastereo- and enantioselectiveformal [3 + 2]-cycloaddition between substituted vinylcyclopropanes and electron-deficient olefins in the form of azlactone- and Meldrum's acid alkylidenes to give highly substitutedcyclopentane products. By modulation of the electronic properties of the vinylcyclopropane and the electron-deficient olefin, high levels of stereoselectivity