A Novel Fluorescent Skeleton from Disubstituted Thiochromenones via Nickel-Catalyzed Cycloaddition of Sulfobenzoic Anhydrides with Alkynes
作者:Pengbing Mi、Lirong He、Tanxiao Shen、Jing Zhi Sun、Hui Zhao
DOI:10.1021/acs.orglett.9b02161
日期:2019.8.16
Nickel-catalyzed cycloaddition of alkynes and 2-sulfobenzoic anhydrides gives highly functionalized thiochromenones. The reaction undergoes a deoxygenative rather than decarbonylative pathway and shows advantages of an excellent isolated yield (up to 95%), high reaction efficiency, and high regioselectivity. As one of the resulted products, 2,3-di(triphenylamine)-thiolchromenone possesses a typical
炔烃和2-磺基苯甲酸酐的镍催化环加成反应可得到高度官能化的硫代色酮。该反应经历了脱氧而不是脱羰的途径,并显示出优异的分离产率(高达95%),高反应效率和高区域选择性的优点。作为所得产物之一,2,3-二(三苯胺)-硫羟色酮具有典型的聚集诱导的发射性质并发射有效的近红外荧光。