A direct electrochemical oxidative cyclization of activated alkynes with diselenides or disulfides toward functionalized coumarins and quinolinones has been developed.

Electrosynthesis has received great attention among researchers in both academia and industry as an ideal technique to promote single electron reduction without the use of expensive catalysts. In this work, we report the electrochemical reduction of Katritzky salts to alkyl radicals by sacrificing the easily accessible metal anode. This catalyst and electrolyte free platform has broad applicability to single electron transfer chemistry, including fluoroalkenylation, alkynylation and thiolation. The deaminative functionalization is facilitated by the rapid molecular diffusion across microfluidic channels, demonstrating the practicality that outpaces the conventional electrochemistry setups.

A novel bis-furan diepoxide (OmbFdE) was developed via a mild and scalable route, and applied in epoxy resins in an eco-friendly manner, with the resulting materials showing good thermal stability. Especially for the formulation OmbFdE/TEGA (TEGA = 2,2′-(ethane-1,2-diylbis(oxy))bis(ethan-1-amine)), a comparatively low heat release and formation of a carbon wall accounted for outstanding flame retardancy, indicating its potential application in engineering.