Radical Heck-type reaction of styrenes with sulfonyl hydrazides on water at room temperature
作者:Wen-Hui Bao、Wei-Wei Ying、Xu-Dong Xu、Guo-Dong Zhou、Xiao-Xiao Meng、Wen-Ting Wei、Yan-Yun Liu、Qiang Li
DOI:10.1016/j.tetlet.2018.11.059
日期:2019.1
vinyl sulfones is developed. The reaction is performed under economical TBAI/TBHP system on water in open air at room temperature, which proceeds through the radical addition to styrenes followed by hydrogen-abstraction. When compared to known approaches for the synthesis of vinyl sulfones from alkenes, this radical Heck-type strategy is practical, green and does not go through HI elimination process
在此,开发了苯乙烯与磺酰肼的金属自由基Heck型反应以合成乙烯基砜。该反应在经济的TBAI / TBHP体系下于室温下在露天水中在水上进行,该反应通过自由基加成至苯乙烯中,然后进行氢吸收来进行。当与从烯烃合成乙烯基砜的已知方法相比时,这种自由基的Heck型策略是可行的,绿色的,并且不会经历HI消除过程。此外,该方案可以扩展到炔烃的碘磺酰化以合成碘乙烯基砜。