Synthesis of β‐Keto Sulfones by Oxy‐Sulfonylation of Alkynes in HFIP
作者:Xingyu Chen、Sixian Lu、Yuyan Zheng、Jigang Wang、Lan Yang、Peng Sun
DOI:10.1002/adsc.202101444
日期:2022.3.30
Herein, we have established a method for the construction of β-ketosulfones through aerobic oxy-sulfonylation of alkynes with sulfinates. The reaction performed employing air as the oxidant and oxygen source. Moreover, this protocol exhibits low consume of sulfinates, short reaction period, and minimal waste. Mechanism study and density functional theory (DFT) calculation showed that the solvent played
alkenes with tosyl cyanide was discovered. Experimental investigations revealed that the reaction was initiated by the in situ formation of sulfinyl sulfone in the presence of water. The sulfinyl sulfone species decomposed to a sulfonyl radical and a sulfinyl radical through homolytic fission. The vinyl sulfone was afforded via sequential addition of the alkene to the sulfonyl radical and the sulfinyl
Photochemical Halogen-Bonding Promoted Synthesis of Vinyl Sulfones via Vinyl and Sulfonyl Radicals
作者:Zhou Jiang、Ke You、Haibo Wu、Mengyu Xu、Tao Wang、Jin Luo
DOI:10.1021/acs.orglett.3c03958
日期:2024.1.26
A photochemical halogen-bonding-assisted synthesis of vinyl sulfonesvia radical–radical cross-coupling of vinyl bromines and sodium sulfinates is developed. This methodology offers a facile and efficient approach to various vinyl sulfones with excellent functional group tolerance under metal-, photocatalyst-, base-, and oxidant-free conditions. The reaction is also applicable for the late-stage functionalization