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1,3-Dipolar cycloaddition reactions of 4-arylidene-2-phenyl-1,4-dihydroimidazol-5-ones with nitrile oxides

✍ Scribed by N. G. Argyropoulos; E. Coutouli-Argyropoulou; C. Siacavara

Book ID
112129845
Publisher
Journal of Heterocyclic Chemistry
Year
1990
Tongue
English
Weight
228 KB
Volume
27
Category
Article
ISSN
0022-152X

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## Abstract Nitrile oxides 2a, b and nitrile imines 2c–e are added to the C ο£Ύ C bond of 4‐arylidene‐2‐phenyl‐5(4__H__)‐thiazolones 1 to afford spiro‐isoxazolines 3a–d and spiro‐pyrazolines 3e–j, respectively. The cycloaddition reactions are regioselective and only one of the two possible regioisome