摘要 已经成功开发了通过串联的Knoevenagel-Pinner环化-Michael反应构建生物相关的2-氨基-4 H-色烯支架的有效,经济和绿色策略。在基于DABCO的离子液体的存在下,两种不同的2-amino-4 H -chromene衍生物,2-amino-4-(吲哚-3-yl)-4 H -chromenes和2-amino-4-(pyrazol-在温和的条件下,在较短的反应时间内就可以以良好的产率(4-97%)制备4-yl)-4 H-苯甲基。所有产品均通过简单的结晶纯化。催化剂可以循环至少五次。 已经成功开发了通过串联的Knoevenagel-Pinner环化-Michael反应构建生物相关的2-氨基-4 H-色烯支架的有效,经济和绿色策略。在基于DABCO的离子液体的存在下,两种不同的2-amino-4 H -chromene衍生物,2-amino-4-(吲哚-3-yl)-4 H
Tailoring ionic liquid catalysts: structure, acidity and catalytic activity of protonic ionic liquids based on anionic clusters, [(HSO<sub>4</sub>)(H<sub>2</sub>SO<sub>4</sub>)<sub>x</sub>]<sup>−</sup> (x = 0, 1, or 2)
作者:Karolina Matuszek、Anna Chrobok、Fergal Coleman、Kenneth R. Seddon、Małgorzata Swadźba-Kwaśny
DOI:10.1039/c4gc00415a
日期:——
The speciation of a family of inexpensive, easily prepared protonic ionic liquids, their physico-chemical properties and their performance as catalysts in the model esterification reaction have been correlated.
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。
An affordable DABCO-based ionic liquid efficiency in the synthesis of 3-amino-1-aryl-1H-benzo[f] chromene-2-carbonitrile, 1-(benzothiazolylamino)phenylmethyl-2-naphthol, and 1-(benzoimidazolylamino)phenylmethyl-2-naphthol derivatives
the synthesis of 3-amino-1-aryl-1H-benzo[f]chromene-2-carbonitrile, 1-(benzothiazolylamino)phenylmethyl-2-naphthol, and 1-(benzoimidazolylamino)phenylmethyl-2-naphthol derivatives. In the presence of this catalyst, all reactions are performed under neat conditions during short reaction times in good-to-high yields. Ease of preparation and recyclability of the catalyst are the other important advantages
在这项研究中,[H 2 -DABCO] [HSO 4 ] 2用作酸性离子液体,以消除先前报道的用于合成3-氨基-1-芳基-1 H-苯并[ f ]色烯的方法的缺点。-2-腈,1-(苯并噻唑基氨基)苯基甲基-2-萘酚和1-(苯并咪唑基氨基)苯基甲基-2-萘酚衍生物。在这种催化剂的存在下,所有反应均在纯净条件下,短时间内以高至高收率进行。易于制备和催化剂的可回收性是该方法的另一个重要优点。
Novel DABCO based acidic ionic liquid as a green protocol for the synthesis of thiazolidin-4-one derivatives and cytotoxic activity evaluation on human breast cancer cell line
作者:Priyanka Pinate、Sangita Makone
DOI:10.1080/17415993.2022.2099223
日期:2023.1.2
A novel [C4H10-DABCO][ClO4]2 DABCO based protic acid supported ionicliquid has been synthesized, characterized, and evaluated as an efficient, economic, and reusable catalyst for the onepot, three component synthesis of 1,3-thiazolidin-4-one in an aqueous medium with high to excellent yield. This study compares DABCO based ionicliquids [H2-DABCO][HSO4]2, [H2-DABCO][H2PO4]2, [H2-DABCO][ClO4]2, and