Green alternative solvents for the copper-catalysed arylation of phenols and amides

Investigation of the use of green organic solvents for the Cu-catalysed arylation of phenols and amides is reported. Alkyl acetates proved efficient solvents in the catalytic processes, and therefore excellent alternatives to the typical non-green solvents used for Cu-catalysed arylation reactions. Solvents such as isosorbide dimethyl ether (DMI) and diethyl carbonate also appear as viable possibilities for the arylation of phenols. Finally, a novel copper catalysed acyl transfer process is reported.