Reactivity of 4??azido??and 4??amino??6??methyl??2H??pyran??2??one. Preparation of 1??(6??methyl??2??oxopyran??4??yl)??1, 2, 3??triazoles and 5??oxopyrano [4, 3??b] pyridines

R Malet, N Serra, RA Abramovitch…

Index: Malet, R.; Serra, N.; Abramovitch, R. A.; Moreno-Manas, M.; Pleixats, R. Journal of Heterocyclic Chemistry, 1993 , vol. 30, # 2 p. 317 - 321

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Citation Number: 2

Abstract

Abstract 1, 3-Dipolar cycloadditions of stable 4-azido-6-methyl-2H-pyran-2-one 1 with electron-rich alkenes and alkynes lead to 4, 5-substituted 1-(6-methyl-2-oxopyran-4-yl)-1, 2, 3-triazoles. Iminophosphoranes derived from 1 have also been synthesized. 5-Oxopyrano [4, 3-b] pyridines are prepared by reaction of 4-amino-6-methyl-2H-pyran-2-one 2 with β- dicarbonyl compounds.