Stereoselective synthesis of isoxazole and pyrazole annulated sultams via intramolecular 1,3-dipolar cycloaddition reactions
作者:Ugo Chiacchio、Antonino Corsaro、Giuseppe Gumina、Venerando Pistarà、Antonio Rescifina、Manlio Alessi、Anna Piperno、Giovanni Romeo、Roberto Romeo
DOI:10.1016/s0040-4020(97)00874-0
日期:1997.10
isothiazoloisoxazole-4,4-dioxide, pyrazoloisothiazole-1,1-dioxide, [1,2]thiazinoisoxazole-4,4-dioxide and benzo[1,2]thiazinoisoxazole-4,4-dioxide systems have been obtained by intramolecular 1,3-dipolar cycloaddition, starting from substituted α- and β-sulfonamides.
分子内1已获得功能化的异噻唑并异恶唑-4,4-二氧化物,吡唑并异噻唑-1,1-二氧化物,[1,2]噻嗪异恶唑-4,4-二氧化物和苯并[1,2]噻嗪异恶唑-4,4-二氧化物体系。 ,3-偶极环加成,从取代的α-和β-磺酰胺开始。