m-Iodosylbenzoic Acid: Recyclable Hypervalent Iodine Reagent for α-Tosyloxylation and α-Mesyloxylation of Ketones

Abstract

m-Iodosylbenzoic acid–mediated reactions of various carbonyl compounds provided α-organosulfonyloxy carbonyl compounds in good yields. The final products could be easily isolated without any chromatographic purification by simple treatment of the crude mixture with an anionic exchange resin.

Keywords:

• Hypervalent iodine
• α-organosulfonyloxy ketones
• recycle
• α-sulfonylation of ketones

ACKNOWLEDGMENTS

M. S. Y. and A. K. thank Fonds der Chemischen Industrie for support of this work. K. W. C., M. S. Y., and R. Y. Y. are grateful for the support of the Brain Korea 21 program.

Notes

^a Isolated yields of pure products.