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Synthesis 2002(15): 2168-2170
DOI: 10.1055/s-2002-34841
SHORTPAPER
© Georg Thieme Verlag Stuttgart · New York

Synthesis of Novel Dibenzo[3,4:7,8][1,5]diazocinoquinazolinones

K. Santa Deepthi, P. S. N. Reddy*
Department of Chemistry, Osmania University, Hyderabad 500 007, India.
e-Mail: psnreddyou@yahoo.com;
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Publication History

Received 4 April 2002
Publication Date:
21 October 2002 (online)

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Abstract

A facile one step synthesis of dibenzo[3,4:7,8][1,5] diazocino[2,1-b:6,5-b′]diquinazolin-10,21-dione (4a) and N-methyl/ethyldibenzo[3,4:7,8][1,5]diazocino[6,5-b]quinazolin-5,16-diones (4b,c) is described. The mechanism involves a transannular reaction and the conformational structure of 4b was confirmed by X-ray crystallographic data.

Key words

diazocine - quinazolin-4(3H)-one - annelation - X-ray crystallographic analysis - microwave reaction.