Abstract
β-Keto sulfone is a useful structure in organic chemistry and pharmaceuticals. In the present study, we developed a highly efficient visible-light-promoted reaction to prepare β-keto sulfones under mild conditions. Synthesis was achieved via one-pot multi-component reaction of aryldiazo tetrafluoroborate salts, alkenes, and DABSO in the presence of air (O2) with rhodamine B serving as the photocatalyst. A variety of β-keto sulfones were obtained at high yields by this one-pot operation under aerobic atmosphere. This oxysulfonylation procedure has benefits such as mild reaction conditions, a wide tolerance of functional groups, and simplicity, making it a promising choice for preparing valuable β-keto sulfones.
Published Version
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