An efficient and green one-pot synthesis of indazolo[1,2-b]-phthalazinetriones via three-component reaction of aldehydes, dimedone, and phthalhydrazide using Fe3O4@SiO2 core–shell nanoparticles
作者:Boshra Mirhosseini-Eshkevari、Mohammad Ali Ghasemzadeh、Javad Safaei-Ghomi
DOI:10.1007/s11164-014-1854-8
日期:2015.10
An efficient and eco-friendly procedure for the one-pot synthesis of biologically active heterocyclic compounds including indazolo[1,2- b ]-phthalazinetriones has been developed in the presence of Fe3O4@SiO2 nanoparticles. The multicomponent reactions of aldehydes, dimedone, and phthalhydrazide were carried out under solvent-free conditions to obtain some indazolo[1,2- b ]-phthalazinetrione derivatives
在Fe 3 O 4 @SiO 2纳米粒子的存在下,已经开发出了一种有效且环保的方法,用于一锅合成生物活性杂环化合物,包括吲哚并[1,2- b ]-酞嗪三酮。在无溶剂条件下进行醛,二甲酮和邻苯二甲酰肼的多组分反应,得到一些吲唑并[1,2- b ]-酞嗪三酮衍生物。本方法提供了许多优点,例如优异的收率,简单的后处理,低的反应时间,容易的催化剂分离和很少的催化剂负载。
Novel ionic liquid <i>N,N</i>-diethyl-<i>N</i>-sulfoethanaminium hydrogen sulfate: Design, characterization, and application as a highly efficient catalyst for the production of triazolo[1,2-<i>a</i>]indazole-triones and 2<i>H</i>-indazolo[2,1-<i>b</i>]phthalazine-triones
作者:Abdolkarim Zare、Fatemeh Masihpour
DOI:10.1080/10426507.2016.1149853
日期:2016.8.2
mass data. Then, its catalytic activity was examined for the preparation of triazolo[1,2-a]-indazole-triones and 2H-indazolo[2,1-b]phthalazine-triones by the one-pot multi-component condensation of arylaldehydes with dimedone and 4-phenylurazole/2,3-dihydrophthalazine-1,4-dione under solvent-free conditions. [Et3N-SO3H]HSO4 efficiently promoted the reaction to afford the products in high yields and
Efficient synthesis of 2H-indazolo[2,1-b]phthalazine-trione derivatives using succinimidinium N-sulfonic acid hydrogen sulfate as a new ionic liquid catalyst
Succinimidinium N-sulfonic acid hydrogen sulfate is prepared as a new ionic liquid and characterized with a variety of techniques including FT-IR, 1H and 13C NMR, SEM, mass spectra method as well as Hammett acidity function. After identification, this reagent was used as an efficient catalyst for the multi-component synthesis of 2H-indazolo[2,1-b]phthalazine-trione derivatives. The simple work-up, mild
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。
Solvent-free sonochemical one-pot three-component synthesis of 2H-indazolo[2,1-b]phthalazine-1,6,11-triones and 1H-pyrazolo[1,2-b]phthalazine-5,10-diones
作者:Gaurav Shukla、Rajiv K. Verma、Girijesh K. Verma、Maya Shankar Singh
DOI:10.1016/j.tetlet.2011.10.136
日期:2011.12
A rapid and efficient one-potthree-component protocol for the synthesis of 2H-indazolo[2,1-b]phthalazine-1,6,11-triones 4 and 1H-pyrazolo[1,2-b]phthalazine-5,10-diones 6 has been developed by domino coupling of phthalhydrazide, 1,3-diketones, and aldehydes under solvent-free conditions at 80 °C as well as under solvent-free ultrasound irradiation at room temperature promoted by (S)-camphorsulfonic
一种快速高效的一锅三组分规程,用于合成2 H-吲唑并[2,1- b ]邻苯并-1,6,11-三酮4和1 H-吡唑并[1,2- b ]邻苯并-通过在80°C下无溶剂条件下以及(S)促进的室温下在无溶剂超声辐照下,将邻苯二甲酰肼,1,3-二酮和醛进行多米诺偶联,开发了5,10-二酮6。樟脑磺酸。
Solvent-free, sonochemical, one-pot, four-component synthesis of 2H-indazolo[2,1-b]phthalazine-triones and 1H-pyrazolo[1,2-b]phthalazine-diones catalyzed by Fe3O4@SiO2-imid-PMAn magnetic nanoparticles
A practical and green method for the synthesis of 2H-indazolo[2,1-b]phthalazine-triones and 1H-pyrazolo[1,2-b]phthalazine-diones using Fe3O4@SiO2-imid-PMAn nanoparticles as an eco-friendly magnetic catalyst from the four-component condensation, solvent-free reaction of phthalic anhydride, hydrazinium hydroxide, 1,3-diketones, and aldehydes under thermal or ultrasound irradiation at room temperature
一种使用 Fe 3 O 4 @SiO 2 -imid-PMA合成 2 H -吲唑并[2,1- b ]酞嗪三酮和 1 H -吡唑并[1,2- b ]酞嗪二酮的实用绿色方法n描述了纳米粒子作为一种环保磁性催化剂,来自邻苯二甲酸酐、氢氧化肼、1,3-二酮和醛的四组分缩合、无溶剂反应,在室温下进行热或超声辐照。这种新方法具有显着的优点,例如操作简单、产率高、反应时间短以及没有任何繁琐的后处理或纯化。此外,催化剂的热稳定性、易于制备和分离使其成为一种良好的多相体系,是其他多相催化剂的有用替代品。此外,催化剂可以很容易地通过磁场回收并重复使用八个连续的反应循环而不会显着损失活性。