By employing quinoline N-oxides as the starting materials, the electrochemical C–H sulfonylation of electron-deficient quinolines was indirectly achieved at room temperature.

An electrochemical oxidative CÀ H sulfonylation of anilines without a metal catalyst and an external oxidant has been developed. Various sodium sulfinates are compatible, generating the desired products in up to 96% yield. Preliminary mechanism studies suggest that a radical crosscoupling process is involved in this transformation.

We herein report an electrochemical deoxygenative C2 arylation protocol of quinoline N-oxides. By employing both anodic oxidation and cathodic reduction, a variety of 2-arylquinolines were obtained under environmentally benign conditions.

Herein, we report the reaction of quinoline with diphenylphosphine oxide in the presence of visible light without catalyst. The reaction completes in 24 h under the mild conditions and the substrates are well tolerant. This method provides a straightforward and environmentally friendly access to diphosphorous quinoline compounds. Similarly, this method can also aid in the phosphate functionalization of some heterocyclic compounds.