ISSN : 0970 - 020X, ONLINE ISSN : 2231-5039
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Synthesis and Characterization of Some New Nitrosubstituted 3,5 - Diaryl Isoxazoles, Thio Isoxazoles and Their Derivatives

P. J. Parmar* and S. I. Rajput

*Department of Chemistry; B.P. Arts, S.M.A. Science and K.K.C. Commerce College, Chalisgaon- 424101 (India)

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ABSTRACT:

Chalcone dibromides (IVa-d) or flavones (Va-d) were treated with hydroxylamine hydrochloride, aqueous KOH and ethanol to give same isoxazoles (VIa-d) from both methods. Isoxazoles (VIa-d) was reacted with P2S5 in pyridine medium to give thioisoxazoles (VIIa-d). Isoxazoles (VIa-d) were treated with acetic anhydride and a pinch of anhydrous sodium acetate to give 3-(2-acetoxy)-isoxazoles (VIIIa-d). Thioisoxaziles (VIIa-d) was reacted with acetic anhydride and a pinch of anhydrous sodium acetate to give 3-(2-acetoxy)-thioisoxazoles (IX a-d).

KEYWORDS:

Synthesis; Isoxazoles; Thioisoxazoles; acetyl derivatives

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Parmar P. J, Rajput S. I. Synthesis and Characterization of Some New Nitrosubstituted 3,5 - Diaryl Isoxazoles, Thio Isoxazoles and Their Derivatives. Orient J Chem 2006;22(1).


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Parmar P. J, Rajput S. I. Synthesis and Characterization of Some New Nitrosubstituted 3,5 - Diaryl Isoxazoles, Thio Isoxazoles and Their Derivatives. Orient J Chem 2006;22(1). Available from: http://www.orientjchem.org/?p=19398



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