Iodoxybenzoic Acid (IBX): An Efficient and Novel Oxidizing Agent for the Aromatization of 1,4-Dihydropyridines

J. S. Yadav; B. V. S. Reddy; A. K. Basak; G. Baishya; A. Venkat Narsaiah

doi:10.1055/s-2005-918519

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Synthesis 2006(3): 451-454
DOI: 10.1055/s-2005-918519

PAPER

Iodoxybenzoic Acid (IBX): An Efficient and Novel Oxidizing Agent for the Aromatization of 1,4-Dihydropyridines [1]

J. S. Yadav*, B. V. S. Reddy, A. K. Basak, G. Baishya, A. Venkat Narsaiah
Division of Organic Chemistry, Indian Institute of Chemical Technology, Hyderabad 500007, India
Fax: yadavpub@iict.res.in; e-Mail: +91(40)27160512;

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Publication History

Received 7 July 2005
Publication Date:
21 December 2005 (online)

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Abstract

Hantzsch 1,4-dihydropyridines undergo smooth aromatization catalyzed by iodoxybenzoic acid (IBX) to afford the corresponding pyridine derivatives in high yields. All the reactions were carried out in DMSO solvent at 80-85 °C for a period of two to four hours to complete conversion of the substrates.

Keywords

hypervalent iodine reagents - dihydropyridines - aromatization - DMSO - pyridine derivatives

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IICT Communication No. 041107.