Oxidative kinetic resolution of heterocyclic sulfoxides with a porphyrin-inspired manganese complex by hydrogen peroxide

•The oxidative kinetic resolution of racemic heterocyclic sulfoxides.•The high-valent manganese (IV)-oxo complexes.•A variety of substrates (including pyridine, pyrimidine, pyrazine, thiazole, benzothiazole, thiophene).•Excellent chemoselectivity and enantioselectivities (up to > 99% ee).•Using the environmentally benign hydrogen peroxide as a oxidant.