作者:Tamal Roy、Ji-Woong Lee
DOI:10.1055/s-0039-1690991
日期:2020.3
We report a facile synthesis of sulfones, β-keto sulfones, and sulfonamides from vinyl sulfones via an addition–elimination sequence where in situ generation of nucleophilic sulfinate ion is mediated by cyanide. The use vinyl sulfones renders high selectivity for S-alkylation to produce sulfones in high yields. In the presence of N-bromosuccinimide, primary and secondary amines underwent sulfonamide
我们报告了通过加成-消除序列从乙烯基砜轻松合成砜、β-酮砜和磺酰胺,其中亲核亚磺酸根离子的原位生成由氰化物介导。乙烯基砜的使用使 S-烷基化的高选择性以高产率生产砜。在 N-溴代琥珀酰亚胺存在下,伯胺和仲胺会形成磺酰胺。一项初步的机理研究表明,丙烯腈是一种无害的副产物,在生成亚磺酸盐亲核试剂的同时不会干扰所需的反应途径。