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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:

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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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

ID: J54-Y2020