Asymmetric Conjugate Addition of α-Cyanoketones to Enones Using Diaminomethylenemalononitrile Organocatalyst
作者:Kosuke Nakashima、Yuta Noda、Shin-ichi Hirashima、Yuji Koseki、Tsuyoshi Miura
DOI:10.1021/acs.joc.7b02976
日期:2018.2.16
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。