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Reactivity of p-phenyl substituted β-Enamino compounds using K-10/ultrasound. II. Synthesis of isoxazoles and 5-Isoxazolones

✍ Scribed by Claudete J. Valduga; Denise B. Santis; Hugo S. Braibante; Mara E. F. Braibante

Publisher
Journal of Heterocyclic Chemistry
Year
1999
Tongue
English
Weight
215 KB
Volume
36
Category
Article
ISSN
0022-152X

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✦ Synopsis

Abstract

The condensation of 4‐phenyl substituted β‐enamino ketones 1a‐d and β‐enamino esters 5a‐d with hydroxylamine hydrochloride using K‐10 as the solid support under sonication was studied to evaluate the formation of isoxazole and 5‐isoxazolone rings from β‐enamino compounds with a substituted aromatic ring. Isoxazoles 2a‐c, 3c‐d and 5‐isoxazolones 6a‐c and 7a‐d were obtained. The use of K‐10/ultrasound in this reaction furnished novel results in some cases.

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