A facile, practical and eco-friendly protocol for the synthesis of various Z-vinyl thiocyanates under minimal solvent conditions was developed.

By using ambient air as an oxidant, various Nacylated 3-aminoquinoxalin-2(1H)-ones were efficiently synthesized through visible-light-promoted rhodamine B-catalyzed amidation reaction of quinoxalin-2(1H)-ones and amides under metal-free and strong oxidant-free conditions.

We first report the direct ortho C–H amidation of arenes with azides by using a novel and inexpensive RuHCl­(CO)­(PPh3)3 catalyst. The reaction proceeds efficiently in high yield over a broad range of substrates without requirement of any additional silver salt or additive.

A simple palladium-catalyzed selective synthesis of structurally diverse 3,4-dihydroquinazolines from electron-rich arylamines, electron-poor arylamines and glyoxalates has been developed under mild conditions. This reaction is carried out in a tandem manner constituted by the condensation of arylamines and glyoxalates, the selective Diels-Alder cycloaddition and oxidation processes, in which 4-nitrothiophenol was used as the key ligand.