Introduction of N,N'-disulfonylhydrazines as new sulfonylating reagents for highly efficient synthesis of (E)-β-iodovinyl arenesulfones under mild conditions
作者:Dongping Luo、Lin Min、Weiping Zheng、Lidong Shan、Xinyan Wang、Yuefei Hu
DOI:10.1016/j.cclet.2019.12.040
日期:2020.7
self-dimerization synthesis of disulfones controlled by the “solvent-cage-effects”. In this article, N,N′-disulfonylhydrazines were introduced as new sulfonylating reagents and their combinations with NIS were disclosed as new iodosulfonylating reagents of alkynes. Finally, a highly efficient method for the synthesis of (E)-β-iodovinyl arenesulfones was developed by mixing an alkyne, a N,N′-disulfonyl-hydrazine
摘要早在半个世纪之前,N,N'-二磺酰基肼已被证明是所有类型的磺酰基取代肼中最活泼的磺酰基自由基前体。然而,由这些化合物产生的磺酰基没有用于有机合成,只是受“溶剂笼效应”控制的二砜简单的自二聚合成。在本文中,N,N'-二磺酰基肼被引入作为新的磺酰化试剂,并且它们与NIS的组合被公开为炔烃的新的碘磺酰化试剂。最后,通过将炔烃,N,N'-二磺酰基肼和NIS在THF水溶液中于室温下混合5分钟,开发了一种高效合成(E)-β-碘乙烯基芳烃砜的方法。