Synthesis of Benzoindolines<i>via</i>a Copper-Catalyzed Reaction of 1-Bromoethynyl-2-(cyclopropylidenemethyl)arenes with<i>N</i>-Allylsulfonamide
作者:Shaoyu Li、Zhiming Li、Jie Wu
DOI:10.1002/adsc.201200374
日期:2012.11.12
A copper-catalyzed tandem reaction of 1-bromoethynyl-2-(cyclopropylidenemethyl)arenes with N-allylsulfonamide proceeds smoothly, affording functionalized benzoindolines in moderate to good yields. The transformation is a four-step cascade involving Ullmann coupling, aza-Claisen rearrangement, 6π-electrocyclization, and intramolecular rearrangement.
1-溴乙炔基-2-(环亚丙基甲基)芳烃与N-烯丙基磺酰胺的铜催化串联反应进展顺利,以中等至良好的收率提供了功能化的苯并二氢吲哚。该转化是一个四步级联,涉及乌尔曼偶联,氮杂-克莱森重排,6π-电环化和分子内重排。