作者:Ramadoss Boobalan、Rajagopal Santhoshkumar、Chien-Hong Cheng
DOI:10.1002/adsc.201801335
日期:2019.3.5
Co(III)‐catalyzed [4+1] annulation of amides with allenes to synthesize isoindolone and 1,5‐dihydro‐pyrrol‐2‐one derivatives is reported. A wide range of aromatic and vinylic amides react with allenes to give the corresponding annulation products in good to excellent yields. The mechanistic studies strongly support that the catalytic reaction proceeds through an amide‐directed C−H activation, followed
据报道,Co(III)催化酰胺与烯丙基的[4 + 1]环合反应合成异吲哚酮和1,5-二氢吡咯-2-酮衍生物。各种各样的芳族和乙烯基酰胺与烯类反应,以良好或优异的收率得到相应的环状产物。机理研究强烈支持催化反应通过酰胺导向的CH活化,随后的丙二烯碳钴化,β-氢化物消除和分子内1,2-氨基胺化来进行。