Decarboxylative cross-coupling reactions of cinnamic acids with sulfonylhydrazides were explored using oxygen as the sole terminal oxidant, realizing a conceptually novel technology for vinyl sulfone synthesis under the synergistic interactions of visible light irradiation, organic dye-type photocatalyst eosin Y, KI, and Cs2CO3 at room temperature.

Visible-light-enabled photocatalytic carbotrifluoro-methylations of allylic alcohols and sodium triflinate were explored through 1,2-migration of an aryl group, affording an efficient method for synthesis of b-trifluoromethyl-a-substituted carbonyl compounds under mild reaction conditions. This catalyst system is well tolerant of various synthetically useful functional groups.

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