Readily available alkenylalanes, arising from hydroalumination of unprotected terminal alkynes, have been directly employed for the copper-catalyzed asymmetric conjugate addition (ACA) to β-substituted cyclic enones. The desired products, containing a quaternary stereogenic center, are generally obtained in good yields and enantioselectivities.
由未保护的末端
炔烃的加氢铝化反应产生的现成的链烯基
丙二酸酯已直接用于
铜催化的β-取代的环烯酮的不对称共轭加成反应(ACA)。通常以良好的收率和对映选择性获得含有四级立体异构中心的所需产物。