Nickel-Catalyzed Sonogashira C(sp)–C(sp<sup>2</sup>) Coupling through Visible-Light Sensitization
作者:Da-Liang Zhu、Ruijie Xu、Qi Wu、Hai-Yan Li、Jian-Ping Lang、Hong-Xi Li
DOI:10.1021/acs.joc.0c01177
日期:2020.7.17
efficient method for visible-light-initiated, nickel-catalyzed Sonogashira C(sp)–C(sp2) coupling has been developed via an energy-transfer mode. Thioxanthen-9-one as a photosensitizer could significantly accelerate the arylation of alkynes with a wide range of (hetero)aryl halides in high yields. The cross-couplingreaction undergoes the stepwise oxidative addition of an arylhalide to nickel(0), transmetalation
Nickel-catalyzed oxidative decarboxylative coupling reactions between alkynyl carboxylic acids and arylboronic acids
作者:Ju-Hyeon Lee、Gabriel Charles Edwin Raja、Yujeong Son、Jisun Jang、Jimin Kim、Sunwoo Lee
DOI:10.1016/j.tetlet.2016.09.054
日期:2016.10
Nickel-catalyzed decarboxylative coupling reactions between aryl alkynyl carboxylic acids and arylboronicacids were developed. When aryl alkynyl carboxylic acids were reacted with arylboronicacids in the presence of NiCl2 (10 mol %), 2,2′-bipyridine (20 mol %), Na2CO3 (1.0 equiv), and Ag2CO3 (1.0 equiv) in DMF at 80 °C for 18 h, the corresponding diaryl alkynes products were formed in moderate to
开发了镍催化的芳基炔基羧酸和芳基硼酸之间的脱羧偶联反应。在NiCl 2(10 mol%),2,2'-联吡啶(20 mol%),Na 2 CO 3(1.0当量)和Ag 2 CO 3(1.0 )存在下,芳基炔基羧酸与芳基硼酸反应当量)在DMF中于80°C放置18 h,相应的二芳基炔烃产物以中等至良好的产率形成。