Silica-supported orthophosphoric acid (H3PO4·SiO2) as an environmentally friendly, heterogeneous catalyst for one-pot synthesis of 4-substituted 1,5-benzodiazepines

TitleSilica-supported orthophosphoric acid (H3PO4·SiO2) as an environmentally friendly, heterogeneous catalyst for one-pot synthesis of 4-substituted 1,5-benzodiazepines
Publication TypeJournal Article
Year of Publication2025
AuthorsKattimani, MS, Khyadage, PH, Mitragotri, SD, Kulkarni, MA, Wadgaonkar, PP
JournalChemistry of Heterocyclic Compounds
Volume61
Issue9-10
Pagination485-490
Date PublishedOCT
Type of ArticleArticle
ISSN0009-3122
Keywords4-substituted 1, 5-benzodiazepine, aldehydes, dimedone, o-Phenylenediamine, silica-supported orthophosphoric acid
Abstract

An efficient, environmentally friendly protocol was developed for the synthesis of 4-substituted 1,5-benzodiazepines via a one-pot three-component reaction. o-Phenylenediamines, dimedone, and aldehydes were reacted in the presence of silica-supported orthophosphoric acid (H3PO4 & centerdot;SiO2) as an environmentally friendly, heterogeneous catalyst at 70 degrees C to produce 4-substituted 1,5-benzodiazepines. High to excellent yields, metal-free, environmentally friendly, reusable catalyst, and faster reactivity are the notable features of the developed protocol.

DOI10.1007/s10593-026-03447-6
Type of Journal (Indian or Foreign)

Foreign

Impact Factor (IF)

1.2

Divison category: 
Polymer Science & Engineering
Database: 
Web of Science (WoS)

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