Solvent- and supporting electrolyte-free electrolysis in a two-compartment cell proved to be effective for the direct electroactivation of CH acid-containing compounds vs. catalytic addition processes. Michael adducts (including quaternary carbon centres) and 2-nitroalkanols were obtained in very good yields and selectivity on application of a catalytic amount of electricity under galvanostatic conditions
A new strategy based on the catalytic release of the supporting electrolyte agent in the electrolysis medium proved to be effective for the direct electroactivation of suitable C–H acid-containing compounds vs. catalytic addition processes, under solvent-free conditions.
作者:Pol Hernández‐Lladó、Kilian Garrec、Daniel C. Schmitt、Jonathan W. Burton
DOI:10.1002/adsc.202101451
日期:2022.5.17
Annulated heteroaromatics can be accessed through the addition of malonyl radicals onto heterocycles. Current methods are applicable to electron-rich heteroaromatics and reliant on transition metals or toxic tin reagents. Here we report a metal-free, visible light-mediated cyclisation of malonates onto 5-ring heteroaromatics using iodomalonates as key intermediates. The iodomalonates are prepared and