Author： Rajanarendar E. Raju S. Reddy A. Siva Rami
Publisher： Taylor & Francis Ltd
ISSN： 1042-6507
Source： Phosphorus, Sulfur, and Silicon and the Related Elements, Vol.184, Iss.12, 2009-12, pp. : 3139-3148
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Abstract
The key intermediates, 3-(5-methyl-3-isoxazolyl)-2-arylimino-1,3-thiazolan-4-ones (3), were obtained from 3-amino-5-methylisoxazole (1) by reaction with chloroacetyl chloride followed by treatment with aryl isothiocyanates. Cyclocondensation of 3 with mercapto acetic acid furnished novel isoxazolyl 1,6-dithia-4,9-diazaspiro[4,4]nonane-3,8-diones (4). Cycloaddition of 3 with benzonitrile oxides afforded novel isoxazolyl 1-oxa-6-thia-2,4,9-triazaspiro[4,4]non-2-ene-8-ones (5).
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