Copper-catalyzed selective radical–radical cross-coupling for C–S bond formation: an access to α-alkylthionitriles
作者:Caihong Zheng、Fangling Lu、Hanwei Lu、Jie Xin、Yi Deng、Dali Yang、Shengchun Wang、Zhiliang Huang、Meng Gao、Aiwen Lei
DOI:10.1039/c8cc02371a
日期:——
A new protocol for C–S bond formation was developed by selective cross-coupling between a thiyl radical and an isobutyronitrile radical. Using this strategy, a series of valuable α-alkylthionitrile derivatives were synthesized from basic starting materials. Preliminary mechanistic investigation was performed by EPR and XAFS, revealing that the transient thiyl radical could be stabilized by a copper
通过硫杂基和异丁腈基之间的选择性交叉偶联,开发了一种新的形成CS键的方法。使用这种策略,从碱性起始原料合成了一系列有价值的α-烷基硫腈衍生物。EPR和XAFS进行了初步的机理研究,结果表明,瞬变的噻吩基可以被铜催化剂稳定成持久的催化剂。因此,在持久的自由基效应的基础上,这项工作成功地实现了噻吩基和异丁腈基之间的选择性基-自由基交叉偶联。