Rh-Catalyzed Annulations of <i>N</i>-Methoxybenzamides and Ketenimines: Sterically and Electronically Controlled Synthesis of Isoquinolinones and Isoindolinones
作者:Xiaorong Zhou、Zhiyin Zhang、Hongyang Zhao、Ping Lu、Yanguang Wang
DOI:10.1021/acs.joc.7b00258
日期:2017.4.7
Rhodium-catalyzed C–H activation/annulation reactions of ketenimines with N-methoxybenzamides are reported. The outcome of reactions is dependent on the structure of ketenimines. The β-alkyl-substituted ketenimines furnish 3-iminoisoquinolin-1(2H)-ones in a formal [4 + 2] annulation manner, while the β-ester substituted ketenimines afford 3-aminoisoindolin-1-ones in a formal [4 + 1] annulation manner
据报道,铑催化氯胺酮与N-甲氧基苯甲酰胺的CH活化/环化反应。反应的结果取决于酮亚胺的结构。β-烷基取代的酮亚胺以正规的[4 + 2]环化方式提供3-亚氨基异喹啉-1(2 H)-,而β-酯取代的酮亚胺以正规的[4]提供3-氨基异吲哚啉-1-酮。 +1]环形方式。合成的[4 + 2]产物经过分子内Cu催化的C–N偶联,转化为苯并[4,5]咪唑并[1,2 - b ]异喹啉-11-酮,可以直接从酮亚胺和N-甲氧基苯甲酰胺通过一锅Rh催化的环化/ Cu催化的C–N偶联序列。