An Annulative Synthetic Strategy for Building Triphenylene Frameworks by Multiple C−H Bond Activations
作者:Bijoy P. Mathew、Hyun Ji Yang、Joohee Kim、Jae Bin Lee、Yun-Tae Kim、Sungmin Lee、Chang Young Lee、Wonyoung Choe、Kyungjae Myung、Jang-Ung Park、Sung You Hong
DOI:10.1002/anie.201700405
日期:2017.4.24
C−H activation is a versatile tool for appending aryl groups to aromatic systems. However, heavy demands on multiple catalytic cycle operations and site‐selectivity have limited its use for graphene segment synthesis. A Pd‐catal‐ yzed one‐step synthesis of functionalized triphenylene frameworks is disclosed, which proceeds by 2‐ or 4‐fold C−H arylation of unactivated benzene derivatives. A Pd2(dibenzylideneacetone)3
CH活化是将芳基连接到芳族体系上的通用工具。但是,对多个催化循环操作和位点选择性的严格要求限制了其在石墨烯链段合成中的用途。公开了功能化的三亚苯基骨架的钯催化一步合成,其通过未活化的苯衍生物的2或4倍CH芳基化进行。使用环状二芳基碘鎓盐作为π扩展剂的Pd 2(二苄叉基丙酮)3催化体系导致定点选择性分子间和分子内串联芳基化序列。此外,N取代的联苯被应用于场效应晶体管传感器,以进行快速,灵敏和可逆的酒精蒸气检测。