Synthesis of 1,2-Diazol-4-sulfonamides, 1,2,4- and 1,2,5-Oxadiazol-3-sulfonamides, 1,2,3-Triazol-4-sulfonamides, and Pyrimidine-5-sulfonamides starting from Cyanomethanesulfonyl Chloride
作者:Martin Winterwerber、Rouzita Geiger、Hans-Hartwig Otto
DOI:10.1007/s00706-006-0536-7
日期:2006.10
aminomethylidene derivatives. The reaction of alkoxymethylidene derivatives with phenylhydrazine resulted in the formation of 5-aminopyrazol-4-sulfonamides, whereas from cyanomethanesulfonamides via the N -hydroxyamidine derivatives and their reaction with esters 1,2,4-oxadiazol-3-methanesulfonamides became accessible. Nitrosation of cyanomethanesulfonamides yielded 2-hydroxyimino derivatives which were
氰基甲磺酰氯与胺反应生成氰基甲磺酰胺,可将其转化为烷氧基亚甲基和氨基亚甲基衍生物。与苯肼衍生物alkoxymethylidene的反应导致的5-氨基吡唑-4-磺酰胺的形成,而从cyanomethanesulfonamides 经由 所述 Ñ -hydroxyamidine衍生物及其与酯反应-1,2,4-恶二唑-3- methanesulfonamides成为可访问的。氰基甲磺酰胺的亚硝化产生2-羟基亚氨基衍生物,然后将其转化为2-羟基亚氨基 N -羟基am衍生物,最后环化成4-氨基-1,2,5-恶二唑-3-磺酰胺。另一方面,氰基甲磺酰胺重氮化得到2-芳基肼基衍生物,其转化成 N- 羟基am衍生物后, 通过与POCl 3 5-氨基-1,2,3-三唑-4磺酰胺反应得到。最后,氰基甲磺酰胺与乙酸甲酰胺鎓之间的反应使人们容易获得4-氨基嘧啶-5-磺酰胺,可以通过原甲酸三烷基酯将其转化为取代的嘧啶基[4