10.1021/jo3023186.s001 Shoji Matsumoto Shoji Matsumoto Hiroyuki Shibata Hiroyuki Shibata Motohiro Akazome Motohiro Akazome α‑Diketone Formation Accompanied by Oxidation of Sulfur Functional Group by the Reaction of <i>o</i>‑Alkynylarenesulfoxide with Iodine American Chemical Society 2016 IodineThe reaction Diketone iodine additive Oxidation sulfinyl Formation diketone Sulfur Functional Group material oxygen atoms sulfonyl compound functionalitie formation ratio sulfenyl sulfoxide yield Results show 2016-02-19 22:31:32 Journal contribution https://acs.figshare.com/articles/journal_contribution/_Diketone_Formation_Accompanied_by_Oxidation_of_Sulfur_Functional_Group_by_the_Reaction_of_i_o_i_Alkynylarenesulfoxide_with_Iodine/2442706 The reaction of <i>o</i>-alkynylarenesulfoxide with iodine was investigated in detail, revealing functionalities of the formation of α-diketones with sulfenyl, sulfinyl, and sulfonyl. Additives can change the ratio of products to give medium-to-excellent yields. Results show that water is taken into only sulfonyl compound and that other oxygen atoms constructed in the products are presumably derived from sulfoxide of the starting material and molecular oxygen.