Metal-Free Oxidative C-C Coupling of Arylamines Using a Quinone-Based Organic Oxidant

被引:33
作者
Maddala, Sudhakar [1 ]
Mallick, Sudesh [1 ]
Venkatakrishnan, Parthasarathy [1 ]
机构
[1] Indian Inst Technol, Dept Chem, Madras 600036, Tamil Nadu, India
关键词
PALLADIUM-CATALYZED AMINATION; HOLE-TRANSPORT MATERIALS; AMORPHOUS MOLECULAR MATERIALS; AGGREGATION-INDUCED EMISSION; CATION-RADICALS; ARYL CHLORIDES; PERMANGANATE OXIDATION; AROMATIC AMINATION; CRYSTAL-STRUCTURES; SCHOLL REACTION;
D O I
10.1021/acs.joc.7b01377
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
A variety of arylamines are shown to undergo oxidative C-C bond formation using quinone-based chloranil/H+ reagent as the recyclable organic (metal free) oxidant system to afford benzidines/naphthidines. Arylamines (3 degrees/2 degrees) designed with various substituents were employed to understand the steric as well as electronic preferences of oxidative dimerization, and a mechanism involving amine radical cation has been proposed. The tetraphenylbenzidine derivative obtained via oxidative C-C coupling has been further converted to blue-emissive hole-transporting material via a simple chemical transformation. This study highlights the preparation of novel HTMs in a simple, economic, and efficient manner.
引用
收藏
页码:8958 / 8972
页数:15
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