A novel palladium–copper catalyzed C(sp³)–C(sp²) bond C–H activation cross-coupling reaction has been developed. A series of 9-aryl-9H-xanthenes and 9,9-diaryl-xanthenes were selectively synthesized in moderate to good yields by controlling the reaction time and temperature.

The tail of imidazole regulated the assembly of fascinating 2Dsqltopology and 3D 2-fold interpenetratedlvtstructure polyoxotungstate-based open frameworks with efficient visible-white-light-driven aerobic catalytic oxidation of sulfides.

This paper presents a metal-free and external oxidant-free electrochemical method for the oxidative coupling methodology of amines in moderate to satisfactory yields.