Synthesis 2013; 45(14): 2043-2050
DOI: 10.1055/s-0033-1338854
paper
© Georg Thieme Verlag Stuttgart · New York

A Simple One-Pot Synthesis of 2-Substituted Quinazolin-4(3H)-ones from 2-Nitrobenzamides by Using Sodium Dithionite

Angel H. Romero
Laboratorio de Química Medicinal y Heterociclos, Departamento de Química, Edificio de Química y Procesos, Universidad Simón Bolívar, Valle de Sartenejas, Apartado 89000, Baruta, Caracas 1080-A, Venezuela   Fax: +58(212)9063961   Email: slopez@usb.ve
,
José Salazar
Laboratorio de Química Medicinal y Heterociclos, Departamento de Química, Edificio de Química y Procesos, Universidad Simón Bolívar, Valle de Sartenejas, Apartado 89000, Baruta, Caracas 1080-A, Venezuela   Fax: +58(212)9063961   Email: slopez@usb.ve
,
Simón E. López*
Laboratorio de Química Medicinal y Heterociclos, Departamento de Química, Edificio de Química y Procesos, Universidad Simón Bolívar, Valle de Sartenejas, Apartado 89000, Baruta, Caracas 1080-A, Venezuela   Fax: +58(212)9063961   Email: slopez@usb.ve
› Author Affiliations
Further Information

Publication History

Received: 29 January 2013

Accepted after revision: 19 April 2013

Publication Date:
14 June 2013 (online)


Abstract

A simple one-pot procedure for the preparation of 2-(het)arylquinazolin-4(3H)-ones starting from readily available 2-nitrobenzamides and (het)aryl aldehydes is described. Sodium dithionite is used as the reducing agent for the nitro group, and its decomposition in situ in aqueous N,N-dimethylformamide leads to the final oxidation step that gives the desired heterocyclic compounds.

Supporting Information