Pd(II)-Catalyzed Regioselective Multiple C–H Arylations of 1-Naphthamides with Cyclic Diaryliodonium Salts: One-Step Access to [4]- and [5]Carbohelicenes
作者:Menglei Wang、Min Zhang、Yuanyuan Luo、Zheng Liu、Chengyong Yang、Jingbo Lan、Di Wu、Jingsong You
DOI:10.1021/acs.orglett.9b04046
日期:2020.1.3
Highly efficient and rapid construction of carbohelicenes is a desired but challenging task, especially starting from simple substrates. Herein, Pd(II)-catalyzed regioselective multiple C-H arylations of 1-naphthamides with cyclic diaryliodoniums have been accomplished for the first time, which enables facile one-step syntheses of [4]- and [5]carbohelicenes from readily available starting materials
高效且快速的碳杂戊烯酮的构建是一项理想而艰巨的任务,尤其是从简单的底材开始。本文中,首次完成了Pd(II)催化的1-萘酰胺与环二芳基碘鎓的区域选择性多重CH芳基化反应,这使得可以轻松地从容易获得的起始原料一步一步合成[4]-和[5]碳硼烯。所得的单和双[4]碳氢化合物发出紫红色至深蓝色荧光。[4,5,4]-融合的三碳碳烯酮显示出天蓝色发射,而苯并恶嗪修饰的[4]碳硼烷烯显示出延迟的荧光发射。