Add time:09/05/2019         Source:sciencedirect.com

A mild, practical and efficient strategy to prepare β-keto sulfones has been developed by visible-light-induced reactions. This reaction involved Ir(dtbbpy)(ppy)2PF6-catalyzed direct functionalization of alkynes with sulfonyl chloride and HCl using air as the oxidant. HCl not only acted as a hydrogen source in the proton transfer process, but also played a vital role in the reaction process.

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