7-Tetrahydro-4H-indazol-4-one derivatives were successfully synthesized using a one-pot three-component system that combines substituted β-nitrostyrenes, 1,3-cyclohexanediones and phenylhydrazines. This reaction involves a highly efficient domino sequence consisting of the aza-Michael reaction, intramolecular O-nucleophilic addition, nucleophilic addition, and ring opening of furan as the key unit steps. Notably,
使用结合取代的
β-硝基苯乙烯,
1,3-环己二酮和苯
肼的一锅三组分系统成功合成了1,5,6,7-Tetrahydro-4 H-
吲唑-4-one衍
生物。该反应涉及由aza-Michael反应,分子内O-亲核加成,亲核加成和
呋喃的开环组成的高效多米诺序列,这是关键的单元步骤。值得注意的是,实现了四氢-4 H-
吲唑酮部分的高度区域选择性的结构和官能化芳环的引入。