Synthesis of alkynyl sulfones
A highly efficient, metal-free, and generally applicable iodine-catalyzed reaction of arylacetylenic acids and arylacetylenes with sodium sulfinates provides arylacetylenic sulfones.
J. Meesin, P. Katrun, C. Pareseecharoen, M. Pohmakotr, V. Reutrakul, D. Soorukram, C. Kuhakarn, J. Org. Chem., 2016, 81, 2744-2752.
The cerium(IV) ammonium nitrate (CAN) mediated reaction of aryl sulfinates and sodium iodide with alkenes afforded vinyl sulfones in very good yields. Alkynes underwent a similar reaction to give β-iodovinyl sulfones, which on treatment with potassium carbonate afforded the corresponding acetylenic sulfones in high yields.
V. Nair, A. Augustine, T. D. Suja, Synthesis, 2002, 2259-2265.