Preparation of a new DABCO-based ionic liquid and investigation on its application in the synthesis of benzimidazoquinazolinone and pyrimido[4,5-b]-quinoline derivatives
In this article, we report the preparation of a new ionicliquid from the reaction of DABCO and sulfuric acid and its characterization using FT-IR, Mass and NMR spectroscopy. This ionicliquid is air- and water-stable and affordable. Afterward this reagent is used for the synthesis of benzimidazoquinazolinone and pyrimido[4,5-b]-quinoline derivatives as a catalyst. The results show the applicability
在本文中,我们报告了由DABCO与硫酸反应制备的新型离子液体,并使用FT-IR,质谱和NMR光谱对其进行了表征。这种离子液体对空气和水都是稳定的,并且价格适中。此后,该试剂用于合成苯并咪唑并喹唑啉酮和嘧啶并[4,5- b ]-喹啉衍生物作为催化剂。结果表明,所制备的试剂作为可重复使用的催化剂的适用性而不会损失其活性。该方法具有一些优点,例如易于制备催化剂,后处理步骤简单,反应时间短,产率高以及使用无毒且廉价的催化剂。
Agar-entrapped sulfonated DABCO: Agelly acidic catalyst for the acceleration of one-pot synthesis of 1,2,4-triazoloquinazolinone and some pyrimidine derivatives
After preparation and identification this new reagent is used as an efficient and environmentally safe catalyst for the preparation of 1, 2, 4-triazoloquinazolinone and somepyrimidinederivatives. This method is accompanied with some superiorities such as, simple operation, mild and green conditions, use of low cost and non-hazardous natural material, short reaction times, easy preparation methods and
An Efficient synthesis of pyrimido[4,5-<i>b</i>]quinoline and indeno[2′,1′:5,6]pyrido[2,3-<i>d</i>]pyrimidine derivatives via multicomponent reactions in ionic liquid
作者:Shun-Jun Ji、Sai-Nan Ni、Fang Yang、Jing-Wen Shi、Guo-Lan Dou、Xiao-Yue Li、Xiang-Shan Wang、Da-Qing Shi
DOI:10.1002/jhet.5570450310
日期:2008.5
A series of pyrimido[4,5-b]quinoline and indeno[2′,1′:5,6]pyrido[2,3-d]pyrimidine derivatives were synthesized via the three-component reaction of an aldehyde, 6-aminopyrimidine-2,4-dione and 5,5-dimethyl-1,3-cyclohexanedione or 1,3-indanedione in ionic liquid 1-n-butyl-3-methylimidazolium bromide ([bmim]Br). This protocol has the advantages of easier work-up, milder reaction conditions, high yields
通过醛6-氨基嘧啶的三组分反应合成了一系列嘧啶并[4,5- b ]喹啉和茚并[2',1':5,6]吡啶[2,3- d ]嘧啶衍生物离子液体1 - n-丁基-3-甲基咪唑鎓溴化物([bmim] Br)中的-2,4-二酮和5,5-二甲基-1,3-环己二酮或1,3-茚满二酮。与其他方法相比,该方案的优点是后处理容易,反应条件温和,收率高且对环境无害。
An eco-friendly and magnetized biopolymer cellulose-based heterogeneous acid catalyst for facile synthesis of functionalized pyrimido[4,5-b]quinolines and indeno fused pyrido[2,3-d]pyrimidines in water
energy-dispersive X-ray spectroscopy, thermogravimetric analysis, X-ray diffraction, and scanning electron microscopy. Thereafter, its capability to promote the one-pot, three-componentsynthesis of pyrimido [4,5-b] quinolone and pyrido [2,3-d] pyrimidinederivatives was evaluated. The obtained results are indicative of excellent yields and short reaction times. The biopolymer based catalyst is readily recovered
Abstract An efficient, convenient and environmentally benign one-pot multicomponent reaction for the preparation of pyrimido[4,5-b]quinolinederivatives as biologically, pharmacologically and antibacterially active products has been developed using RuCl 3 · x H 2 O as a reusable homogenous catalyst. Use of water as a green solvent, purification of products by non-chromatographic methods, reusability
摘要以RuCl 3·x H 2 O为可重复使用的均相溶液,开发了一种高效,便捷且对环境无害的单锅多组分反应法,用于制备嘧啶并[4,5-b]喹啉衍生物的生物学,药理和抗菌活性。催化剂。使用水作为绿色溶剂,通过非色谱法纯化产物,过渡金属均相催化剂的可重复使用性,通过采用多组分反应节省能源,反应时间短且产率高,是该方法的一些优点。