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Updated: May 20, 2026

Facile Preparation of 4-Substituted Quinazoline Derivatives
Published on: February 15, 2016
One-pot, two-step cascade synthesis of quinazolinotriazolobenzodiazepines
Kathryn G Guggenheim1, Hannah Toru, Mark J Kurth
1Department of Chemistry, University of California , One Shields Avenue, Davis, California 95616, United States.
Abstract:
An operationally simple, one-pot, two-step cascade method has been developed to afford quinazolino[1,2,3]triazolo[1,4]benzodiazepines. This unique, atom-economical transformation engages five reactive centers (amide, aniline, carbonyl, azide, and alkyne) and employs environmentally benign iodine as a catalyst. The method proceeds via sequential quinazolinone-forming condensation and intramolecular azide-alkyne 1,3-dipolar cycloaddition reactions. Substrate scope, multicomponent examples, and mechanistic insights are discussed.
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