Rh(I)-Catalyzed Alkylation of <i>ortho</i>-C–H Bonds in Aromatic Amides with Maleimides
作者:Qiyuan He、Takuma Yamaguchi、Naoto Chatani
DOI:10.1021/acs.orglett.7b02135
日期:2017.9.1
An alkylation of C–H bonds with maleimides by a rhodium-catalyzed reaction of aromatic amides containing an 8-aminoquinoline moiety as the directing group is reported. Various N-substituents in the maleimide, including methyl, ethyl, cyclohexyl, benzyl, and phenyl groups and even H, are applicable to the reaction. The reaction is highly regioselective at the less hindered ortho-C–H bond when meta-substituted
据报道,通过铑催化的含8-氨基喹啉部分作为导向基团的芳族酰胺的铑反应,使C-H键与马来酰亚胺发生烷基化。马来酰亚胺中的各种N-取代基,包括甲基,乙基,环己基,苄基和苯基,甚至H,都适用于该反应。当间位取代的芳族酰胺用作底物时,该反应在较少受阻的邻-C-H键上具有高度区域选择性。