Desymmetrization by direct cross-metathesis producing hitherto unreachable P-stereogenic phosphine oxides
作者:Fabrice Bisaro、Véronique Gouverneur
DOI:10.1016/j.tet.2005.01.019
日期:2005.2
Desymmetrization of prochiral di- and trialkenyl phosphine oxides by cross-metathesis with various olefinic partners allowed direct access to novel racemic P-stereogenic products featuring two or three different alkenyl groups. The excellent control of product selectivity and E/Z selectivity allowed the preparation of desymmetrized products in good yields from readily available precursors. These are
通过与各种烯烃配体的交叉复分解使前手性二烯基和三烯基膦氧化物不对称,可以直接获得具有两个或三个不同烯基的新型外消旋P-立体异构产物。对产物选择性和E / Z选择性的出色控制使得可以容易获得的前体以高收率制备脱对称产物。这些是通过直接交叉复分解使前手性底物去对称化的第一个例子。