Decatungstate-Photocatalyzed Hydroamidomethylation of Azobenzenes with ,-Dimethylamides.

A photocatalytic hydroamidomethylation of azobenzenes with ,-dimethylamides has been developed. Using tetrabutylammonium decatungstate (TBADT) as a photocatalyst, an array of azobenzenes and ,-dimethylamides reacted smoothly under visible light irradiation, affording previously unreported -amidomethyl-,'-diarylhydrazines in generally high yields. Mechanistic studies indicate that the reaction is enabled by TBADT-mediated hydrogen atom transfer (HAT) photocatalysis.

Photocatalyzed Aerobic Cross-Dehydrogenative Coupling of Diarylphosphine Oxides with Alcohols and Phenols.

A photocatalytic cross-dehydrogenative coupling of diarylphosphine oxides with alcohols and phenols has been developed. Using organic dye Rose Bengal as the photocatalyst and air as the oxidant, the reaction proceeded smoothly at room temperature. Both alcohols and phenols were feasible, affording various organophosphinates in high yields.