香港中文大学繆謙团队报道了区域选择性Scholl反应生成咔唑稠合多环芳烃。相关研究成果于2021年9月14日发表于国际一流学术期刊《德国应用化学》。

该研究探索了利用Scholl反应合成具有有趣几何结构和有用性质的新型咔唑稠合多环芳烃。从具有两个咔唑单元通过邻苯烯在不同位置连接的底物的Scholl反应中发现，咔唑单元的氧化偶联以区域选择性方式发生，新的碳-碳键最好在N-烷基咔唑的C-3和C-4处形成。

研究人员用单晶X射线晶体学对一种新型含N芳香碗进行了表征，新型p型有机半导体在溶液处理的薄膜晶体管中的场效应迁移率高达0.070cm²/Vs。

附：英文原文

Title: Carbazole-Fused Polycyclic Aromatics Enabled by Regioselective Scholl Reactions

Author: Mengna Zhao, Sai Ho Pun, Qi Gong, Qian Miao

Issue&Volume: 2021-09-14

Abstract: This study explores synthesis of new carbazole-fused polycyclic aromatics with interesting geometry and useful properties using Scholl reactions. As found from the Scholl reactions of substrates having two carbazole units linked at different positions through  o  -phenylene, oxidative coupling of carbazole units occured in a regioselective manner with new carbon-carbon bonds preferably formed at C-3 and C-4 in N-alkyl carbazole. A new N-containing aromatic bowl was characterized with single crystal X-ray crystallography, and new p-type organic semiconductors exhibited field effect mobility of up to 0.070 cm  2  /Vs in solution-processed thin film transistors.

DOI: 10.1002/anie.202107373

Source: https://onlinelibrary.wiley.com/doi/10.1002/anie.202107373