Succinimidinium hydrogensulfate ([H-Suc]HSO4) as a new, green and efficient ionic liquid catalyst for the synthesis of tetrahydrobenzimidazo[2,1-b]quinazolin-1(2H)-one, 1-(benzothiazolylamino)phenylmethyl-2-naphthol, 1, 8-dioxo-octahydroxanthene and bis(indolyl)methane derivatives
作者:Omid Goli-Jolodar、Farhad Shirini
DOI:10.1007/s13738-016-0822-1
日期:2016.6
In this work, succinimidinium hydrogensulfate ([H-Suc]HSO4), a newly reported Brönsted acidic ionic liquid, is used as an efficient and reusable catalyst in the synthesis of tetrahydrobenzimidazo[2,1-b]quinazolin-1(2H)-ones, 1-(benzothiazolylamino)phenylmethyl-2-naphthols, 1,8-dioxo-octahydroxanthenes and bis(indolyl)methanes. All reactions were performed during relatively short reaction times with
在这项工作中,新报道的布朗斯台德酸性离子液体硫酸氢琥珀酰亚胺([H-Suc] HSO 4)在合成四氢苯并咪唑并[ 2,1- b ]喹唑啉-1(2 H)中用作有效且可重复使用的催化剂。)-,1-(苯并噻唑基氨基)苯基甲基-2-萘酚,1,8-二氧-八氢氧杂蒽和双(吲哚基)甲烷。所有反应均在相对短的反应时间内进行,并具有优异的收率。通过IR,1 H NMR和13 C NMR光谱对产物的结构进行表征,并通过比较真实样品进行确认。
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.
Production, characterization, and application of a novel chitosan-g-maleic anhydride and modified graphene oxide nanocomposite, supported methane sulfonic acid, for efficient synthesis of 1-(benzothiazolylamino) methyl-2-naphtols
this paper to fabricate 1-(benzothiazolylamino) methyl-2-naphthols using a novel green nanocomposite of chitosan and diethylenetriamine-modified grapheneoxide, supported methanesulfonic acid (Ch@GO-DETA.MSA.). For the synthesis of the nanocomposite, maleic anhydride was first attached to chitosan, and then, grapheneoxide was modified by diethylenetriamine (GO@DETA). Subsequently, nanocomposite was
AbstractOne-pot, efficient three-component condensation of aromatic aldehydes, 2-naphthol and 2-aminobenzothiazole in the presence of oxalic acid as an organocatalyst and effective catalyst for the synthesis of 1-(benzothiazolylamino) methyl-2-naphthol derivatives under thermal and solvent-free conditions is described. The present approach of this methodology offers several advantages such as high
Fe<sub>3</sub>
O<sub>4</sub>
@SiO<sub>2</sub>
-ZrCl<sub>2</sub>
-MNPs: A novel magnetic catalyst for the clean and efficient cascade synthesis of 1-(benzothiazolylamino)methyl-2-naphthol derivatives in the absence of solvent
作者:Fatemeh Kamali、Farhad Shirini
DOI:10.1002/aoc.3972
日期:2018.1
A green, simple and eco‐friendly three‐component condensation for the synthesis of 1‐(benzothiazolylamino)methyl‐2‐naphthols using new magnetic nanoparticles formulated as Fe3O4@SiO2–ZrCl2‐MNPs is described. Considering the economic and environmental aspects, the method provides some advantages such as clean procedure, solvent‐free conditions, simple operation and work‐up, relatively short reaction
描述了一种绿色,简单且环保的三组分缩合反应,该反应使用新的磁性纳米颗粒Fe 3 O 4 @SiO 2 -ZrCl 2 -MNPs合成1-(苯并噻唑基氨基)甲基-2-萘酚。考虑到经济和环境方面,该方法具有一些优点,例如清洁程序,无溶剂条件,简单的操作和后处理,相对较短的反应时间和较高的产物收率。此外,使用外部磁体可以很容易地将引入的催化剂回收至多达4个连续运行,并且具有一致的活性。