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。
An efficient and practical synthesis of benzazolo[2,1-b]quinazolinones and triazolo[2,1-b]quinazolinones catalyzed by nano-sized NS-C4(DABCO-SO3H)2)·4Cl
作者:Omid Goli-Jolodar、Farhad Shirini
DOI:10.1007/s13738-017-1164-3
日期:2017.11
In this study, 4,4′-(butane-1,4-diyl)bis(1-sulfo-1,4-diazabicyclo[2.2.2]octane-1,4-diium)tetrachloride (NS-C4(DABCO-SO3H)2)·4Cl is used as a nano-sized Brönsted acid catalyst for the efficient and preferment synthesis of benzazolo[2,1-b]quinazolinones and triazolo[2,1-b]quinazolinones derivatives. This protocol has many advantages including mild reaction conditions, acceptable reaction times, high
在这项研究中,4,4'-(butane-1,4-diyl)bis(1-sulfo-1,4-diazabicyclo [2.2.2] octane-1,4-diium)tetrachloride(NS-C 4(DABCO -SO 3 H)2)·4Cl用作纳米级布朗斯台德酸催化剂,可高效,优选地合成苯并[2,1- b ]喹唑啉酮和三唑并[2,1- b ]喹唑啉酮衍生物。该方案具有许多优点,包括温和的反应条件,可接受的反应时间,高收率和产物的后处理容易以及催化剂的可重复使用性。
Facile and Efficient Synthesis of Tetrahydrobenzimidazo [2,1-<i>b</i>]Quinazolin-1(2<i>H</i>)-One Derivatives Using Brönsted Acidic Ionic Liquid Immobilized on Nanoporous Na<sup>+</sup>-Montmorillonite
In this work, an efficient and green procedure have been described for the synthesis of tetrahydrobenzimidazo[2,1-b]quinazolin-1(2H)-one derivatives using nanoporous sodium montmorillonite clay (Na+-MMT) modified with 1-methyl-3-(trimethoxysilylpropyl)-imidazolium hydrogen sulfate (Na+-MMT-[pmim]HSO4). The procedure gave the products in excellent yields in very short reaction times under solvent-free
Nanostructured γ-Fe<sub>2</sub>O<sub>3</sub>@Starch-<i>n</i>-Butyl SO<sub>3</sub>H as New Recyclable Magnetic Catalyst for Promoting Multi-Component Reactions
[γ-Fe₂O₃@starch-n-butyl SO₃H] was easily prepared through a ringopening reaction of 1, 4-butane sultone with nano-magnetic γ-Fe2O3@starch. After structural studies, using FT-IR, SEM, XRD, TGA, TEM, EDX, VSM and also pH analysis the efficiency of this reagent in the preparation of tetrahydrobenzimidazo[2,1-b] quinazolin-1(2H)-ones and 2H-indazolo[2,1-b]phthalazine-triones was studied. Operational simpleness
通过1,4-丁烷磺酸内酯与纳米磁性γ-Fe2O3@的开环反应,可轻松制备丁烷-1-溶剂酸改性的淀粉包覆的γ- 磁性纳米颗粒[γ-Fe2 O 3 @淀粉-正丁基SO 3 H]。淀粉。经过结构研究,使用FT-IR,SEM,XRD,TGA,TEM,EDX,VSM以及pH分析该试剂在制备四氢苯并咪唑并[2,1-b]喹唑啉-1(2H)-酮和研究了2H-吲唑并[2,1-b]酞嗪-三酮。该方法最重要的优点是操作简单,产率高,反应时间短,使用外磁体的催化剂的广泛适用性和简单的可回收性。
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.