o -Phosphinophenolate 和o -phosphinothiophenolate是有效的光催化剂,具有很强的还原能力,可在可见光下活化芳基氯化物和溴化物,进行硼化、芳基化和磷酸化。实验和理论研究表明,邻二苯基膦取代基会导致窄的光学间隙并促进系统间交叉进入三重态,从而促进酚盐和苯硫酚作为有效的可见光-光氧化还原催化剂发挥作用。本文提出的结果表明合成改性的酚盐和苯硫酚盐作为光氧化还原催化剂的前景广阔。
Visible Light-mediated Direct Arylation of Arenes and Heteroarenes Using Diaryliodonium Salts in the Presence and Absence of a Photocatalyst
作者:Mamoru Tobisu、Takayuki Furukawa、Naoto Chatani
DOI:10.1246/cl.130547
日期:2013.10.5
Diaryliodonium salts have been used as aryl radical sources under visiblelight-mediated photoredox catalysis. Benzene and a range of heteroarenes are arylated with Ar2I+ in the presence of [Ir(ppy...
Room-Temperature Arylation of Arenes and Heteroarenes with Diaryliodonium Salts by Photoredox Catalysis
作者:Dong Xue、Jianliang Xiao、Yu-Xia Liu、Jia-Di Wang、Cong-Jun Zhao、Qing-Zhu Zou、Chao Wang
DOI:10.1055/s-0032-1318155
日期:——
Aryl radicals produced by irradiation of diaryliodonium salts with visible light under the catalysis of [Ru(bpy)(3)](2+) undergo coupling with a wide range of arenes and heteroarenes, affording various biaryls through direct C-H arylation at room temperature.