title: Metal-Free, room-temperature, radical alkoxycarbonylation of aryldiazonium salts through visible-light photoredox catalysis.
abstract: The first radical alkoxycarboxylation of aryldiazonium salts using CO gas through visible-light-induced photoredox catalysis (16 W blue LEDs) has been developed. This reaction is entirely metal-free, is carried out at room temperature with a low loading of an organic dye as a photocatalyst (0.5 mol %), and provides a wide range of arylcarboxylic acid esters in high yields. Importantly, this photocatalytic system can be successfully extended to other carboxylation reactions.
authors.affiliation: Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University (CCNU), 152 Luoyu Road, Wuhan, Hubei 430079 (China) http://chem-xiao.ccnu.edu.cn/
authors.forename: Wei
authors.initials: W
authors.lastname: Guo
authors.forename: Liang-Qiu
authors.initials: LQ
authors.lastname: Lu
authors.forename: Yue
authors.initials: Y
authors.lastname: Wang
authors.forename: Ya-Ni
authors.initials: YN
authors.lastname: Wang
authors.forename: Jia-Rong
authors.initials: JR
authors.lastname: Chen
authors.forename: Wen-Jing
authors.initials: WJ
authors.lastname: Xiao
keywords: diazo compounds; esters; photocatalysis; radicals; synthetic methods