859359-24-3Relevant academic research and scientific papers
Electrostatically Enhanced Sulfuric Acid: A Strong Br?nsted Acidic Catalyst for Multi-Component Reactions
Anzabi, Mohadese Yaghoobi,Yazdani, Hossein,Bazgir, Ayoob
, p. 1934 - 1940 (2019)
Abstract: A new electrostatically enhanced sulfuric acid as a strong Br?nsted acidic catalyst has been developed for multi-component reactions. A positively charged center in the catalyst electrostatically activates it for acid-catalyzed multi-component reactions and afforded desired products in short reaction time and near room temperature in EtOH as a green solvent. Graphical Abstract: [Figure not available: see fulltext.].
Catalytic activity of aqueous cationic polyurethane dispersions: A novel feature of polyurethanes
Daemi, Hamed,Rad, Reza Rezaieyeh,Barikani, Mehdi,Adib, Mehdi
, p. 10 - 17 (2013/09/24)
Polyurethane ionomers are well-known and user-friendly polymers. Here, we introduce their catalytic activity for organic reactions as a novel aspect of these polymers. We selected an isocyanide-based multicomponent reaction for proving the catalytic activity of polyurethane ionomers. Therefore, a convenient and very mild methodology is described for the preparation of 3-aminoimidazo[1,2-a]pyridines via a three component reaction between 2-aminopyridines, aldehydes and isocyanides in the presence of a cationic polyurethane dispersion at low reaction temperatures, in short reaction times and excellent yields.
One-pot synthesis of imidazo[1,2-a]pyridines from benzyl halides or benzyl tosylates, 2-aminopyridines and isocyanides
Adib, Mehdi,Sheikhi, Ehsan,Rezaei, Narjes
experimental part, p. 3191 - 3194 (2011/06/28)
A one-pot synthesis of imidazo[1,2-a]pyridines is described. Benzyl halides or benzyl tosylates are oxidized to aldehydes under mild Kornblum conditions which then undergo a three-component reaction with various 2-aminopyridines and isocyanides to afford the imidazo[1,2-a]pyridines in excellent yields.
An efficient, regioselective, versatile synthesis of N-fused 2- and 3-aminoimidazoles via Ugi-type multicomponent reaction mediated by zirconium(IV) chloride in polyethylene glycol-400
Guchhait, Sankar K.,Madaan, Chetna
body text, p. 628 - 632 (2009/07/01)
An Ugi-type multicomponent reaction of heterocyclic amidines with aldehydes and isocyanides catalyzed by zirconium(IV) chloride in PEG-400 was developed. The protocol offers the rapid, environment friendly, regioselective and versatile synthesis of medici
A highly flexible and efficient ugi-type multicomponent synthesis of versatile n-fused aminoimidazoles
Guchhait, Sankar K.,Madaan, Chetna,Thakkar, Balmukund S.
experimental part, p. 3293 - 3300 (2010/02/28)
A microwave-promoted highly flexible and efficient Ugi-type multicomponent reaction of heterocyclic amidines with aldehydes and isocyanides catalyzed by zirconium(IV) chloride was developed. The general protocol offered the very reliable synthesis of a li
