α-oxosulfines part 3. Generation and trapping of α-oxothioaldehyde S-oxides
作者:Giuseppe Capozzi、Alessandra Corti、Stefano Menichetti、Cristina Nativi
DOI:10.1016/s0040-4039(97)01099-x
日期:1997.7
α-Oxothioaldehyde S-oxides 4a-f can be generated under very mild conditions from the corresponding sulfinyl compounds 3a-f, which in turn are obtained by m-chloroperoxybenzoic acid (MCPBA) oxidation of α-oxothiophthalimides 2a-f. The reactive sulfine intermediates can be trapped as electron-poor dienophiles as well as electron-poor dienes with formation of dihydrothiopyran S-oxides 5a-e or 1,4-oxathiin
α-Oxothioaldehyde小号-oxides图4a-f的可以从相应的亚磺酰基化合物非常温和的条件下产生图3a-f的,而这又是通过获得米α-oxothiophthalimides的氯过氧苯甲酸(MCPBA)氧化2A-F 。可以将反应性的硫中间体捕获为贫电子的二烯亲和体和贫电子的二烯,分别形成二氢硫吡喃S-氧化物5a-e或1,4-氧杂环丁烷S-氧化物6a-f。