N,N′-Disulfonylhydrazines: New sulfonylating reagents for highly efficient synthesis of (E)-vinyl sulfones at room temperature
作者:Dongping Luo、Lin Min、Weiping Zheng、Lidong Shan、Xinyan Wang、Yuefei Hu
DOI:10.1016/j.tet.2020.131019
日期:2020.3
has not been applied in organic synthesis except the formation of disulfones by self-dimerization of sulfonyl radicals. In this article, they were introduced as new sulfonylating reagents and their combinations with NIS and Et3N were established as excellent iodosulfonylating reagents for alkenes. Finally, a highly efficient method for the synthesis of (E)-vinyl sulfones was developed by mixing an alkene
N,N'-二磺酰基肼早在半个世纪以前就已被证明是所有类型的磺酰基取代的肼中最具反应性的磺酰基自由基的前体。但是除了通过磺酰基自由基的自二聚形成二砜以外,这种功能还没有用于有机合成。在本文中,将它们作为新的磺酰化试剂进行介绍,并将它们与NIS和Et 3 N的组合确立为烯烃的优异碘磺酰化试剂。最后,通过在室温下将烯烃,N,N'-二磺酰肼,NIS和Et 3 N在THF中混合5分钟,开发了一种高效的(E)-乙烯基砜合成方法。