One-pot synthesis of aliphatic and aromatic 2H-indazolo[2,1-b]phthalazine-triones catalyzed by N-halosulfonamides under solvent-free conditions
作者:Ramin Ghorbani-Vaghei、Rahman Karimi-Nami、Zahra Toghraei-Semiromi、Mostafa Amiri、Mehdi Ghavidel
DOI:10.1016/j.tet.2011.01.024
日期:2011.3
N, N, N′, N′-Tetrabromobenzene-1,3-disulfonamide and poly(N-bromo-N-ethylbenzene-1,3-disulfonamide) were used as efficient catalysts for the one-pot synthesis of aliphatic and aromatic 2H-indazolo[2,1-b]phthalazine-triones in excellent yields from aldehydes, phthalhydrazide, and dimedone at 80–100 °C under solvent-free conditions.
N,N,N ',N'-四溴苯-1,3-二磺酰胺和聚(N-溴-N-乙基苯-1,3-二磺酰胺)被用作一锅合成脂肪族和芳香族2的有效催化剂在80–100°C的无溶剂条件下,H-吲哚并[2,1- b ]酞嗪三酮以优异的产率从醛,邻苯二甲酰肼和二甲基酮产生。