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The reaction of vinylogous amides, or ketoaldehydes, with hydroxylamine produced 4,5,6,7-tetrahydro-l,2-benzisoxazole. A side product is the 2,1-benzisoxazole (Scheme 173) (67AHC(8)277). The ring system can also be prepared by the reaction of cyclohexanone enamines with nitrile oxides (Scheme 173) (78S43, 74KGS901). Base treatment produced ring fission products and photolysis resulted in isomerization to benzoxazoles (76JOC13). [Pg.118]

See other pages where Benzoxazole, reaction with hydroxylamine is mentioned: [Pg.401] [Pg.516] [Pg.65] [Pg.65] [Pg.191] [Pg.191]