Cross dehydrogenative coupling of aldehydes with methanol was investigated under organocatalytic conditions based on the cooperation between N-heterocyclic carbene and eosin Y·Na as an organophotocatalyst. The combined use of eosin Y·Na and hexachloroethane (C2Cl6) was the effective method for the oxidative esterification of various aldehydes, because the oxidation steps are promoted by two pathways