Synthesis of novel 1H-pyridazino[1,2-a]indazole-1,6,9(2H,11H)-triones using one-pot, three components reaction of 1,2-dihydropyridazine-3,6-dione, dimedone and aldehydes under solvent-free conditions has been reported. These products were evaluated in vitro for their antibacterial activities.
Ionic Liquid Catalyzed One-Pot Synthesis of 2<i>H</i>-Pyridazino[1,2-<i>a</i>]indazole-1,6,9(11<i>H</i>)-triones Via Three-Component Reaction under Solvent-Free Conditions
作者:Maohua Ding、Hongyun Guo
DOI:10.1002/jhet.1736
日期:2016.11
hydrazide, and dimedone using a green and inexpensive Brönsted acidic ionic liquid 1‐methyl‐2‐pyrrolidinone hydrosulfate ([Hnmp]HSO4) as catalyst undersolvent‐freeconditions. The method provided several advantages such as milder conditions, shorter reaction time, high yields, and environmentally benign procedure.
2 H-吡啶并[1,2 - a ]吲唑-1,6,9(11 H)-三酮是通过绿色,廉价的布朗斯台德酸性单醛,三组分缩合醛,马来酰肼和二甲基酮合成的。离子液体1-甲基-2-吡咯烷酮硫酸氢盐([Hnmp] HSO 4)在无溶剂条件下作为催化剂。该方法具有许多优点,例如条件温和,反应时间短,收率高和对环境有益。