141421-16-1Relevant articles and documents
Oxazol-5(4H)-ones. Part 7. New Synthesis of Oxazolopyridines
Gelmi, M. Luisa,Pocar, Donato,Viziano, Monica,Destro, Riccardo,Merati, Felicita
, p. 701 - 706 (2007/10/02)
Oxazolopyridines 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.