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。