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4,5-dihydroisoxazoles, IX. Reactions of 3-aryl-4,5-dihydro-4-methylene-5-morpholinoisoxazoles with 2,4-diaryl-5(4H)-oxazolones: A new synthesis of tetrahydro-6-oxo-3-pyridinecarbaldehydes

✍ Scribed by Erba, Emanuela ;Pocar, Donato

Publisher: John Wiley and Sons
Year: 1990
Tongue: English
Weight: 277 KB
Volume: 1990
Category: Article
ISSN: 0947-3440
DOI: 10.1002/jlac.1990199001160

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✦ Synopsis

Abstract

The 5(4__H__)‐oxazolones 1a–e react with 5‐morpholinoisoxazoles 2a–b to afford the 4‐[(4‐isoxazolyl)methyl]‐5(4__H__)‐oxazolones 3a–g. Compounds 3 are hydrogenated with Pd/C in dioxane to yield the corresponding 1,4,5,6‐tetrahydro‐6‐oxo‐3‐pyridinecarbaldehydes 6a–d.

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