Synthesis 2005(5): 717-724  
DOI: 10.1055/s-2005-861820
PAPER
© Georg Thieme Verlag Stuttgart · New York

Low-Valent Titanium Reagent-Promoted Intramolecular Reductive Coupling Reactions of Ketomalononitriles: A Facile Synthesis of Benzo[4,5]indene, Acridine and Quinoline Derivatives

Daqing Shi*a-c, Liangce Ronga, Chunling Shia, Qiya Zhuanga,b, Xiangshan Wanga,b, Shujiang Tua,b, Hongwen Huc
a Department of Chemistry, Xuzhou Normal University, Xuzhou 221116, P. R. China
b The Key Laboratory of Biotechnology for Medical Plants of Jiangsu Province, Xuzhou 221116, P. R. China
c Department of Chemistry, Nanjing University, Nanjing 210093, P. R. China
Fax: +86(516)3403164; e-Mail: dqshi@263.net;
Further Information

Publication History

Received 3 September 2004
Publication Date:
09 February 2005 (online)

Abstract

The intramolecular reductive coupling reactions of ketomalononitriles induced by a low-valent titanium reagent were studied. Benzo[4,5]indene, acridine and quinoline derivatives are prepared in good yields under neutral and mild conditions.