文献类型：期刊文献

英文题名：Visible Light-Catalyzed Decarboxylative Alkynylation of Arenediazonium Salts with Alkynyl Carboxylic Acids: Direct Access to Aryl Alkynes by Organic Photoredox Catalysis

作者：Yang, Liangfeng[1];Li, Haifeng[1];Du, Yijun[1];Cheng, Kai[1];Qi, Chenze[1]

机构：[1]Shaoxing Univ, Zhejiang Key Lab Alternat Technol Fine Chem Proc, Shaoxing 312000, Peoples R China

年份：2019

卷号：361

期号：21

起止页码：5030

外文期刊名：ADVANCED SYNTHESIS & CATALYSIS

收录：SCI-EXPANDED(收录号：WOS:000487489600001)、、Scopus(收录号：2-s2.0-85073937790)、WOS、CCR-EXPANDED(收录号：WOS:000487489600001)

基金：This work was Supported by the National Natural Science Foundation of China (No. 21402123 and No. 21172149), the Zhejiang Provincial Natural Science Foundation of China (No. LY18B020006 and No. LQ14B020001) and the Science Technology Project of Shaoxing City (No. 2017B70053).

语种：英文

外文关键词：Photocatalysis; decarboxylative alkynylation; arenediazonium salts; alkynyl carboxylic acids; transition metal-free coupling

外文摘要：A convenient method mediated by photoredox catalysis is developed for the direct construction of aryl alkynes. Readily available aromatic diazonium salts have been utilized as the aryl radical source to couple alkynyl carboxylic acids to feature the decarboxylative arylation. A wide range of substrates are amenable to this protocol with broad functional group tolerance, and diversely-functionalized aryl alkynes could be synthesized under mild, neutral and transition metal-free reaction conditions using visible light irradiation. Alongside synthetic sustainability associated with the photocatalytic and transition metal-free operation, another key point of this method is that the organic dye catalyst acts as an excited-state reductant, thus establishing the quenching cycle for radical addition and decarboxylative elimination.