Please use this identifier to cite or link to this item:
http://nopr.niscpr.res.in/handle/123456789/55443| Title: | A simple and efficient one-pot synthesis of novel benzimidazo[1,2-a]- chromeno[4,3-d] pyrimidinones catalyzed by [Et3NH][HSO4] |
| Authors: | Prasoona, G Kishore, B Brahmeshwari, G |
| Keywords: | Multi-component synthesis;Benzimidazo[1,2-a]chromeno[4,3-d]pyrimidinones;Polyheterocycles;Triethyl ammonium hydrogen sulphate [TEAHS];Solvent-free conditions |
| Issue Date: | Sep-2020 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | A simple and efficient one-pot synthesis of novel polyheterocyclic benzimidazo[1,2-a]- chromeno[4,3-d]pyrimidinones 4 via a three-component condensation of 2-aminobenzimidazole 1, aromatic aldehydes 2 and 4-hydroxy coumarin 3 catalyzed by Bronsted acid ionic liquid triethyl ammonium hydrogen sulphate [Et3NH][HSO4] 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. |
| Page(s): | 1418-1424 |
| ISSN: | 0975-0983(Online); 0376-4699(Print) |
| Appears in Collections: | IJC-B Vol.59B(09) [September 2020] |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJCB 59B(9) 1418-1424.pdf | 306.39 kB | Adobe PDF | View/Open |
Items in NOPR are protected by copyright, with all rights reserved, unless otherwise indicated.