Hydrated Ferric Sulfate [Fe<sub>2</sub>(SO<sub>4</sub>)<sub>3</sub>·xH<sub>2</sub>O]: An Efficient and Reusable Catalyst for One-Pot Synthesis of 2H-Indazolo[2,1-b]phthalazine-triones
作者:Abhik Choudhury、Shahzad Ali、Abu T. Khan
DOI:10.5012/jkcs.2015.59.4.280
日期:2015.8.31
Hydrated ferric sulfate can be used as an efficient and reusable catalyst for the synthesis of 2H-indazolo[2,1-b]phthalazine-trione derivatives via one-pot three-component condensation reaction of phthalhydrazide, aromatic aldehydes and cyclic-1,3-diketones in ethanol under reflux conditions.
for the synthesis of 2H-indazolo[2,1-b]phthalazine-triones via one-pot, three-component condensation reaction of aromatic aldehydes with 1,3-dicarbonyl compounds and phthalhydrazide using reusable dodecylphosphonic acid (DPA) as heterogeneous solid acid catalyst under solvent-free conditions. This protocol provides a novel and improved method for obtaining 2H-indazolo[2,1-b]phthalazine-triones in terms
已开发出一种新的绿色方案,用于使用可重复使用的十二烷基膦酸酯通过芳香醛与1,3-二羰基化合物和邻苯二甲酰肼的一锅三组分缩合反应来合成2 H-吲唑并[ 2,1 - b ]邻苯二甲酮三酮。在无溶剂条件下作为多相固体酸催化剂的酸(DPA)。该方案提供了一种新颖且改进的方法,该方法以良好的收率和很少的催化剂载量获得了2 H-吲哚并[ 2,1 - b ]邻苯二嗪-三酮。