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Silica gel-supported sulfuric acid catalyzed synthesis of 1,5-benzodiazepine derivatives

✍ Scribed by D. Shobha; M. Adharvana Chari; K. Mukkanti; K. H. Ahn

Publisher: Journal of Heterocyclic Chemistry
Year: 2009
Tongue: English
Weight: 114 KB
Volume: 46
Category: Article
ISSN: 0022-152X
DOI: 10.1002/jhet.174

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✦ Synopsis

Abstract

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Silica gel‐supported sulfuric acid has been found to be an efficient catalyst for the synthesis of 1,5‐benzodiazepines from o‐phenylenediamine and ketones in acetonitrile solvent. This method is simple, effective, and environmentally friendly and gives better yields. Compared to the classical reaction conditions, this new method consistently has the advantage of excellent yields (80–97%) and short reaction time (30–150 min) at room temperature. J. Heterocyclic Chem., (2009).

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