Journal of the Chemical Society. Perkin transactions I p. 701 - 706 (1992)
Update date:2022-08-04
Topics:
Gelmi, M. Luisa
Pocar, Donato
Viziano, Monica
Destro, Riccardo
Merati, Felicita
Oxazolo<5,4-b>pyridines 4 are synthesized by heating the iminophosphoranes 1 and alkylideneoxazol-5(4H)-ones 2.At room temperature the reaction of 4-ethoxymethyleneoxazol-5(4H)-one 2f with iminophosphorane 1a yields the enamino lactone 6, which is, in turn, transformed by heating in acetic acid into the 2(1H)-pyridone 7.
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