diaminomethylenemalononitrile organocatalyst efficiently catalyzed the asymmetric conjugate addition of α-cyanoketones to vinyl ketones to give the corresponding 1,5-dicarbonyl compounds, which bear an all-carbon quaternary stereogenic center with high enantioselectivities. This report is the first example of the asymmetric conjugate addition of α-cyanoketones to vinyl ketones using an organocatalyst.
二
氨基亚甲基
丙二腈有机催化剂有效地催化了α-
氰基酮与
乙烯基酮的不对称共轭加成反应,得到相应的1,5-二羰基化合物,该化合物带有一个全碳的季立体中心,具有高对映选择性。该报道是使用有机催化剂将α-
氰基酮不对称共轭加成到
乙烯基酮中的第一个例子。