琥珀酰亚胺N-磺酸硫酸氢盐被制备为新型离子液体,并通过多种技术进行表征,包括FT-IR,1 H和13 C NMR,SEM,质谱法以及哈米特酸度函数。鉴定后,该试剂用作2 H-吲哚并[ 2,1 - b ]邻苯二甲腈-三酮衍生物的多组分合成的有效催化剂。简单的后处理,温和的反应条件,优异的收率和相对较短的反应时间是该方案的显着优势。另外,该离子液体可以循环使用几次而其催化活性没有明显降低。
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。
Heteropolyacid-based ionic liquid [Simp] 3 PW 12 O 40 nanoparticle as a productive catalyst for the one-pot synthesis of 2H-indazolo[2,1- b ]phthalazine-triones under solvent-free conditions
作者:Reza Tayebee、M. Fattahi Abdizadeh、Behrooz Maleki、Elham Shahri
DOI:10.1016/j.molliq.2017.06.033
日期:2017.9
by FT-IR, 1H NMR, XRD, SEM, EDX and TGA analyses. Then, the focused nanomaterial was handled as a productive and encouraging nanocatalyst for the establishment of 2H-indazolo[2,1-b]phthalazine-1,6,11(13H)-trione attendants through one-pot, multi-component contraction of aldehydes, phthalhydrazide, and dimedone under solventless status and the generality and practical tolerance of this useful and environmentally
通过合成的离子液体3-磺酸1-硫酸咪唑并吡啶鎓硫酸氢盐[Simp] HSO 4与H 3水溶液的反应,开发了一种新型的Keggin型杂多酸基离子液体[Simp] 3 PW 12 O 40。 PW 12 O 40。然后,通过在220℃下在四氢化萘中的溶剂热加工将配制的[Simp] 3 PW 12 O 40改变为纳米形式。之后,通过FT-IR对所提供的粉末状固体纳米材料进行表征,11 H NMR,XRD,SEM,EDX和TGA分析。然后,将聚焦的纳米材料作为生产性和令人鼓舞的纳米催化剂,用于通过一锅多组分收缩形成2H-吲唑并[2,1- b ]酞嗪-1,6,11(13H)-三酮化合物。说明了在无溶剂状态下的醛,邻苯二甲酰肼和二甲酮,以及这种有用且对环境有益的方法的一般性和实用性。简单的后处理,平稳的反应条件,良好至优异的收率以及相当短的反应时间是该方案的特殊优势。此外,新型的纳米粉状离子液体是一种
Introduction of O-sulfonated poly(vinylpyrrolidonium) hydrogen sulfate as an efficient, and reusable solid acid catalyst for some solvent-free multicomponent reactions
In this work, O-sulfonated poly(vinylpyrrolidonium) hydrogen sulphate has been prepared as a powerful recyclable solid acid catalyst and characterized using a variety of techniques including elemental analysis, FT-IR, TGA, SEM, XRD, pH analysis and Hammett acidity function.
A simple, efficient, and cost-effective method for the synthesis of 2H-indazolo[2,1-b]phthalazine-1,6,11(13H)-trione derivatives by a one-pot, three-component condensation reaction of phthalazide, dimedone, or 1,3-cyclohexanedione and aromatic aldehydes under CH3CN/DMF (8:2) media at 80°C for 30–60 min in the presence of trimethylsilyl chloride (TMSCl) is described. J. Heterocyclic Chem., (2009).
一种通过一锅三组分缩合反应合成2 H-吲哚并[ 2,1- b ]邻苯二甲酰1,6,11(13 H)-三酮衍生物的简单,高效且经济高效的方法酞嗪,双甲酮,或1,3-环己二酮和芳香醛在CH 3 CN / DMF(8:2)介质中在80°C下存在30-60分钟的条件下描述了三甲基甲硅烷基氯(TMSCl)。J.杂环化学,(2009)。
Preparation and characterization of a novel DABCO based tetra cationic ionic liquid as a reusable catalyst for the multi-component synthesis of 2H-indazolo[2,1-b]phthalazine-trione and [1,2,4]triazoloquinazolinone derivatives under solvent-free condition
作者:Niloufar Safari、Farhad Shirini、Hassan Tajik
DOI:10.1016/j.molstruc.2019.127143
日期:2020.2
characterized using FT-IR, 1H NMR,13C NMR, TGA, and DTG analysis, and also pH-metric titration method. In continue, the efficiency of the prepared catalyst in the acceleration of the synthesis of 2H-indazolo[2,1-b]phthalazine-trione and [1,2,4]triazoloquinazolinone derivatives, is investigated. Simple experimental procedure, using available and low-cost starting materials for the preparation of the catalyst