Terarylene frameworks containing benzothiazole as a photoprecursor of hydride donors are presented. We here report on two new scaffolds along with their photo-reactivity in solution. Through use of selected external oxidants, the photogeneration of hydride donors is monitored using UV-visible, NMR, and TEM methods. As a proof-of-concept, photogeneration of hydride in the presence of Ag+ gave rise to the formation of Ag nanoparticles.
An efficient desulfitative C–C cross coupling of fused thiazolidine-2-thione with boronic acids and boronic acid pinacol esters: formation of fused thiazoles
An efficient Pd(0)-catalyzedCu(I)-mediated desulfitative C–C cross-coupling of benzo-fused thiazolidine-2-thione with boronic acids under neutral Liebeskind–Srogl conditions is described. The desulfitative cross coupling of boronic acid pinacol esters has also been demonstrated with fused thiazolidine-2-thione under basic conditions to afford fused thiazoles with good to excellent yields.
“Dance reaction” on the aromatic ring is a powerful method in organic chemistry to translocate functional groups on arene scaffolds. Notably, dance reactions of halides and pseudohalides offer a unique platform for the divergent synthesis of substituted (hetero)aromatic compounds when combined with transition-metal-catalyzed coupling reactions. Herein, we report a tandemreaction of ester dance and