Heterogeneous Carbon Nitrides Photocatalysis Multicomponent Hydrosulfonylation of Alkynes To Access β-Keto Sulfones with the Insertion of Sulfur Dioxide in Aerobic Aqueous Medium

Bangqing Ni, Binbin Zhang, Jine Han, Bohan Peng, Yuling Shan and Tengfei Niu*

*School of Chemical and Material Engineering, Jiangnan University, Wuxi, P. R. China, Email: niutfjiangnan.edu.cn

B. Ni, B. Zhang, J. Han, B. Peng, Y. Shan, T. Niu, Org. Lett., 2020, 22, 636-641.

DOI: 10.1021/acs.orglett.9b04454

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Abstract

Graphitic carbon nitride (p-g-C₃N₄) photocatalyzes a hydrosulfonylation of alkynes with the insertion of sulfur dioxide in aerobic conditions. Whereas the oxygen atom of the products is derviced from water, the O₂ plays an important role by quenching the DABCO radical cation. Furthermore, this reaction could be carried out under solar light irradiation and was applicable for large scale.

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Key Words

arylation, alkylation, hydration, multicomponent reactions, photochemistry

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ID: J54-Y2020