Disproportionate Coupling Reaction of Sodium Sulfinates Mediated by BF<sub>3</sub>·OEt<sub>2</sub>: An Approach to Symmetrical/Unsymmetrical Thiosulfonates
作者:Liang Cao、Shi-He Luo、Kai Jiang、Zhi-Feng Hao、Bo-Wen Wang、Chu-Ming Pang、Zhao-Yang Wang
DOI:10.1021/acs.orglett.8b01808
日期:2018.8.17
The BF3·OEt2-mediated disproportionate coupling reaction of sodium sulfinates was found for the first time. In this reaction, various S–S(O)2 bonds can be formed, efficiently giving thiosulfonates in moderate to excellent yields. As a convenient protocol for the synthesis of symmetrical and unsymmetrical thiosulfonates, its reaction mechanism involves the formation of a thiyl radical and sulfonyl radical
首次发现了BF 3 ·OEt 2介导的亚磺酸钠不成比例的偶联反应。在该反应中,可以形成各种S–S(O)2键,从而以中等至极好的收率有效地得到硫代磺酸盐。作为合成对称和不对称硫代磺酸盐的简便方法,其反应机理涉及通过亚磺酰基自由基歧化形成硫代自由基和磺酰基。而且,该转化还可以实际用作克级反应,并以硫代磺酸盐为中间体在一个罐中原位合成两步合成砜和磺酰胺。