一种新型的无机-有机杂化材料Al-SBA-15-TPI / H 6 P 2 W 18 O 62催化一锅,三组分合成2 H-吲唑并[ 2,1 - b ]邻苯二甲腈-三酮†
摘要:
制备了一种新型的无机-有机杂化材料Al-SBA-15-TPI / H 6 P 2 W 18 O 62,并通过SEM,XRD,FT-IR,TGA-DTA和UV-Vis光谱技术进行了全面表征。然后,制备的纳米材料被用作一种简单,经济高效且可重复使用的非均相催化剂,用于合成2 H-吲唑并[ 2,1- b ]邻苯二甲-1,6,11(13 H-三酮衍生物通过邻苯二甲酰肼,环二酮和芳族醛在无溶剂条件下于100°C下短时间内进行一锅三组分缩合反应。就高产率和低反应时间而言,该方法已被证明是有效和环境友好的,并且通过避免昂贵的或腐蚀性的催化剂,在转化范围和操作简单性方面提供了显着的改进。
Magnetic Nanoparticle Immobilized N-Propylsulfamic Acid as a Recyclable and Efficient Nanocatalyst for the Synthesis of 2H-indazolo[2,1-b]phthalazine-triones in Solvent-Free Conditions: Comparison with Sulfamic Acid
作者:Amin Rostami、Bahman Tahmasbi、Ako Yari
DOI:10.5012/bkcs.2013.34.5.1521
日期:2013.5.20
N-Propylsulfamic acid supported onto magnetic $Fe_3O_4$ nanoparticles (MNPs-PSA) was used as an efficient and magnetically recoverable catalyst for synthesis of 2H-Indazolo[2,1-b]phthalazine-1,6,11(13H)-trione derivatives from the three-component, one-pot condensation reaction of phthalhydrazide, aromatic aldehydes and cyclic 1,3-diones, in good to excellent yields at $100^\circ}C$ under solvent-free conditions. The catalyst was easily separated with the assistance of an external magnetic field from the reaction mixture and reused for several consecutive runs without significant loss of its catalytic efficiency. In order to compare, the synthesis of 2H-Indazolo[ 2,1-b]phthalazine-1,6,11(13H)-trione derivatives in the presence of catalytic amount of sulfamic acid (SA) under same reaction condition was also reported.
A new natural based ionic liquid 3-sulfonic acid 1-imidazolopyridinium hydrogen sulfate as an efficient catalyst for the preparation of 2H-indazolo[2,1-b]phthalazine-1,6,11(13H)-triones
A novel Brønstedacidic ionic liquid 3-sulfonic acid 1-imidazolopyridinium hydrogen sulfate [Simp]HSO4 was synthesized via the reaction of caffeine with chlorosulfonic acid and was characterized by studying FT-IR, 1H NMR, 13C NMR, UV–Vis, and fluorescence spectra. Then, the prepared ionic liquid was utilized as an efficient catalyst for the preparation of 2H-indazolo[2,1-b]phthalazine-1,6,11(13H)-trione
通过咖啡因与氯磺酸的反应合成了一种新型的布朗斯台德酸性离子液体3-磺酸1-咪唑并吡啶鎓硫酸氢盐[Simp] HSO 4,并通过FT-IR,1 H NMR,13 C NMR,UV-Vis进行了表征和荧光光谱。然后,将制备的离子液体用作通过一锅多醛缩合制备2H-吲唑并[2,1-b]酞嗪-1,6,11(13H)-三酮衍生物的有效催化剂。 ,邻苯二甲酰肼和二甲酮在无溶剂的条件下使用。该催化剂的高布朗斯台德酸性功能主要源自SO 3 H基团的双重氢键结合能力。
Preparation, characterization, and use of novel Cu@Fe<sub>3</sub>O<sub>4</sub> MNPs in the synthesis of tetrahydrobenzimidazo[2,1-<i>b</i>]quinazolin-1(2<i>H</i>)-ones and 2<i>H</i>-indazolo[2,1-<i>b</i>]phthalazine-triones under solvent-free conditions
作者:Lilin Jiang、Zumrat Druzhinin
DOI:10.1039/c9ra01509d
日期:——
Cu@Fe3O4 MNPs as novel nanomagnetic reagents were prepared to investigate their catalytic behavior in the preparation of tetrahydrobenzimidazo[2,1-b]quinazolin-1(2H)-ones, as important biologically active compounds. Then, characterization of the synthesized nanoparticles was performed using different methods including Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD) analysis
制备了Cu@Fe 3 O 4 MNPs作为新型纳米磁性试剂,以研究它们在制备具有重要生物活性的四氢苯并咪唑[2,1- b ]喹唑啉-1(2 H )-酮类化合物中的催化行为。然后,使用不同的方法对合成的纳米粒子进行表征,包括傅里叶变换红外光谱 (FT-IR)、X 射线衍射 (XRD) 分析、热重分析 (TGA)、振动样品磁力计 (VSM)、能量色散 X 射线(EDX) 和扫描电子显微镜 (SEM)。所有反应均使用少量 Cu@Fe 3 O 4无溶剂条件下的 MNP。反应完成后,由于纳米催化剂的磁性,它们可以简单地用外部磁体分离并易于重复使用,即使经过七次运行,催化性能也没有显着降低。
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
Silica-supported tungstic acid (STA): A recyclable catalyst for the synthesis of <i>1H</i>-indazolo [1,2-<i>b</i>]phthalazine-trione and spiro-triazolo[1,2-<i>a</i>]indazole-tetraone derivatives under solvent-free condition
Abstract An efficient one-pot synthesis of 1 H-indazolo[1,2-b]phthalazine-trione and spiro-triazolo[1,2-a]indazole-tetraone derivatives via three-component condensation reaction of phthalhydrazide or 4-phenylurazole, aldehydes or isatins and dimedone in the presence of a catalytic amount of silica-supported tungstic acid (STA), as a heterogeneous solid acid catalyst under solvent-free conditions is