Cationic 1,3-diazadienes in annulation reactions. Synthesis of pyrimidine, thiadiazinedioxide and triazine derivatives
作者:Cyrille Landreau、David Deniaud、Alain Reliquet、FranÇOise Reliquet、Jean Claude Meslin
DOI:10.1002/jhet.5570380113
日期:2001.1
sulfenes, phenyl isocyanate or isothiocyanate and dimethyl acetylenedicarboxylate affording the corresponding dihydropyrimidinones 3, thiadiazinedioxides 5, triazinones 6, triazinethiones 7 and pyrimidines 9.
由N'-硫代氨基甲酰基甲am 1制备的碘化三氮杂二叠氮化物2是杂环合成中的有效中间体。它们与烯酮,sulfenes,苯基异氰酸酯或异硫氰酸酯和二甲基乙炔得到相应的二氢嘧啶酮类反应3,thiadiazinedioxides 5,三嗪酮6,triazinethiones 7和嘧啶9。