Abstract A simple, general, and highly efficient Betti base ligand has been developed for copper-catalyzed Ullmann coupling of phenol with arylhalides without the protection of an inert atmosphere. The reaction proceeds smoothly in the presence of K2CO3 as the base and dimethylsulfoxide as the solvent. The catalyst was reused several times with no evident loss of catalytic activity and is environmentally
A novel copper-catalyzed N-arylation/alkylation of sulfoximines with acyl peroxides as aryl/alkyl source was developed. This approach undergoes a radical pathway, representing an alternative complement to construct N-arylated/alkylated sulfoximines.