Synthesis 2008(13): 2000-2006  
DOI: 10.1055/s-2008-1067126
PAPER
© Georg Thieme Verlag Stuttgart · New York

A Novel and Efficient Synthesis of 1-Hydroxyquinazolin-4-ones via Tin(II) Chloride Induced Cyclization of 2-Nitrobenzamides and Ketones

Daqing Shi*a,b, Guolan Doub, Yao Zhoub
a Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry and Chemical Engineering, Suzhou University, Suzhou 215123, P. R. of China
e-Mail: dqshi@263.net;
b Department of Chemistry, Xuzhou Normal University, Xuzhou 221116, P. R. of China
Further Information

Publication History

Received 27 February 2008
Publication Date:
11 June 2008 (online)

Abstract

A mild, efficient and novel synthesis of 2,3-dihydro-1-hydroxyquinazolin-4(1H)-ones via cyclization of 2-nitrobenz­amides and ketones induced by tin(II) chloride dihydrate is described. This new method has the advantages of accessible starting materials, convenient manipulation, short reaction times, and high yields.

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Crystallographic data for the structures of 3a (CCDC-682915), 5b (CCDC-682916), 7e (CCDC-682917), and 9a (CCDC-682918) have been deposited at the Cambridge Crystallographic Data Centre. Copies of available material can be obtained free of charge on application to CCDC, 12 Union Road, Cambridge CB2 1EZ, UK [fax: +44 (1223)336033; email: deposit@ccdc.cam.ac.uk].