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<p>A simple and efficient one-pot synthesis of novel benzimidazo[1,2-<em>a</em>]- chromeno[4,3-<em>d</em>] pyrimidinones catalyzed by [Et<sub>3</sub>NH][HSO<sub>4</sub>]</p>

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Title Statement <p>A simple and efficient one-pot synthesis of novel benzimidazo[1,2-<em>a</em>]- chromeno[4,3-<em>d</em>] pyrimidinones catalyzed by [Et<sub>3</sub>NH][HSO<sub>4</sub>]</p>
 
Added Entry - Uncontrolled Name Gumpula, Prasoona ; Government Degree College, Narsampet, Warangal Rural 506 132, India
Baireddy, Kishore ; Department of Chemistry, Kakatiya University, Warangal 506 009, India
Gavaji, Brahmeshwari ; Department of Chemistry, Kakatiya University, Warangal 506 009, India
 
Uncontrolled Index Term Multi-component synthesis, benzimidazo[1,2-a]chromeno[4,3-d]pyrimidinones, polyheterocycles, triethyl ammonium hydrogen sulphate [TEAHS], solvent-free conditions
 
Summary, etc. <p>A simple and efficient one-pot synthesis of novel polyheterocyclic benzimidazo[1,2-<em>a</em>]- chromeno[4,3-<em>d</em>]pyrimidinones <strong>4</strong> <em>via</em> a three-component condensation of 2-aminobenzimidazole <strong>1</strong>, aromatic aldehydes <strong>2</strong> and 4-hydroxy coumarin <strong>3</strong> catalyzed by Bronsted acid ionic liquid triethyl ammonium hydrogen sulphate [Et<sub>3</sub>NH][HSO<sub>4</sub>] under solvent-free conditions is reported. The main advantages of this protocol are short reaction time, easy work-up, operational simplicity, and excellent yields with high purity, without intervention of chromatography.</p>
 
Publication, Distribution, Etc. Indian Journal of Chemistry -Section B (IJC-B)
2020-11-10 12:16:00
 
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http://op.niscair.res.in/index.php/IJCB/article/view/34645
 
Data Source Entry Indian Journal of Chemistry -Section B (IJC-B); ##issue.vol## 59, ##issue.no## 9 (2020): Indian Journal of Chemistry Section - B (IJCB)
 
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Nonspecific Relationship Entry http://op.niscair.res.in/index.php/IJCB/article/download/34645/465511018
http://op.niscair.res.in/index.php/IJCB/article/download/34645/465511019
 
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