Oxy-sulfonylation of terminal alkynes <i>via</i> C–S coupling enabled by copper photoredox catalysis
作者:V. Kishore Kumar Pampana、Vaibhav Pramod Charpe、Arunachalam Sagadevan、Deb Kumar Das、Chun-Cheng Lin、Jih Ru Hwu、Kuo Chu Hwang
DOI:10.1039/d1gc00736j
日期:——
sulfones (C–S bond formation). TMS-N3 promotes the reaction by facilitating the formation of sulfonyl radicals, which later decompose into N2 gas upon light irradiation. This method involves the use of commercially available and stable starting materials. Also, a wide range of functional groups have been well-tolerated under the current photoredox process, evading the side product formation. Potent biologically
我们报道了使用可见光诱导的三甲基甲硅烷基叠氮化物(TMS-N 3)辅助铜催化末端C C键的氧磺酰化反应以形成β-酮砜(CS键形成)的第一个文献实例。TMS-N 3通过促进磺酰基的形成促进反应,该磺酰基随后分解为N 2光线照射时产生气体。该方法涉及使用可商购获得的稳定的起始原料。同样,在当前的光氧化还原工艺下,广泛的官能团被很好地耐受,从而避免了副产物的形成。合成了有效的生物活性化合物,例如CES1、11β-HSD1抑制剂,抗止痛药和反应性合成中间体,以证明当前方法的合成效用。此外,当前光化学方法的绿色化学指标和生态规模评估表明该协议既环保又高效。