109876-84-8

Upstream product

• 57427-86-8 (4E)-4-(4-chlorobenzylidene)-2-phenyloxazol-5(4H)-one 
• 103896-55-5 N-(1-Phenylvinylimino)triphenylphosphorane 
• 15601-44-2 (Z/E)-4-(4-chlorobenzylidene)-2-phenyl-1,3-oxazol-5(4H)-one 
• 16883-69-5 N-phenacylpyridinium bromide 

Relevant academic research and scientific papers

Oxazol-5(4H)-ones. Part 7. New Synthesis of Oxazolopyridines

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.

A Facile Synthesis of 2,5,7-Triaryloxazolopyridines

A facile, one-step procedure for the synthesis of 2,5,7-triaryloxazolopyridines (3) from easily obtainable 2-aryl-4-arylmethylene-2-oxazolin-5-ones (1) is reported.