作者:Ze-Yu Tian、Shi-Meng Wang、Su-Jiao Jia、Hai-Xia Song、Cheng-Pan Zhang
DOI:10.1021/acs.orglett.7b02764
日期:2017.10.6
Triarylsulfonium, alkyl- and fluoroalkyl(diaryl)sulfonium, and aryl(dialkyl)sulfonium triflates are successfully used as a new family of cross-coupling participants in the Sonogashira reaction as aryldiazonium, diaryliodonium, and tetraphenylphosphonium salts. It was found that terminal alkynes reacted mildly with triarylsulfonium or (2,2,2-trifluoroethyl)diphenylsulfonium triflate at room temperature
三芳基ulf,烷基和氟烷基(二芳基)ulf和芳基(二烷基)ulf三氟甲磺酸盐已成功用作Sonogashira反应中的交叉偶联新家族,如芳基重氮盐,二芳基碘鎓盐和四苯基phosph盐。发现末端炔烃在室温下在Pd-和Cu-共催化下与三芳基(或三氟甲磺酸(2,2,2-三氟乙基)二苯基mild轻度反应,以高达> 99%的产率得到相应的芳基炔。该方案代表在Pd / Cu催化的Sonogashira反应中首次使用芳基ulf盐作为交叉偶联伴侣。