Chemodivergent Couplings of N-Arylureas and Methyleneoxetanones via Rh(III)-Catalyzed and Solvent-Controlled C-H Activation

The efficient couplings of diverse N-arylureas and methyleneoxetanones have been realized via Rh(III)-catalyzed and solvent-controlled chemoselective C-H functionalization, which involved the tunable beta-H elimination and beta-O elimination processes, thereby giving divergent access to quinolin-2(1H)-ones and ortho-allylated N-arylureas with broad substrate compatibility and good functional group tolerance. the divergent synthetic utilities of the transformations have also been exemplified by subsequently tandem C-H allylation, unsymmetrical C-H functionalization, alternative reaction mode, as well as removal of the carbamoyl group.