Sulfonyl pyrazoles and isoxazoles: Cycloaddition of nitrile imines and nitrile oxides to aryl styryl sulfones

Authors
Padmavathi, V Reddy, AVB Sumathi, RP Padmaja, A Reddy, DB
Citation
V. Padmavathi et al., Sulfonyl pyrazoles and isoxazoles: Cycloaddition of nitrile imines and nitrile oxides to aryl styryl sulfones, I J CHEM B, 37(12), 1998, pp. 1286-1289
Citations number
15
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
INDIAN JOURNAL OF CHEMISTRY SECTION B-ORGANIC CHEMISTRY INCLUDING MEDICINAL CHEMISTRY
ISSN journal
03764699 → ACNP
Volume
37
Issue
12
Year of publication
1998
Pages
1286 - 1289
Database
ISI
SICI code
0376-4699(199812)37:12<1286:SPAICO>2.0.ZU;2-5
Abstract
Nitrile imines and nitrile oxides by intermolecular cycloaddition reaction with aryl styryl sulfones 1 lead to the formation of tetrasubstituted pyraz olines 3 and trisubstituted isoxazolines 6. The 3 and 6 on dehydrogenation with chloranil in xylene gave pyrazoles 4 and isoxazoles 7. The IR and H-1 NMR spectral data have been used to ascertain the structures of the new com pounds.