Synthesis of new 4-substituted-3-alkoxy-2-butenoic acid esters and pyrazole-3-one derivatives

الملخص EN

A number of new 4-substituted-3-alkoxy-2-butenoic acid esters have been synthesized through the reaction of ethyl (2E)-4-bromo-3-alkoxybut-2-enoates with phenols or naphtha's in the presence of potassium carbonate and acetone.

Treatment of these esters with hydrazine hydrate in ethanol afforded new pyrazol-3-one derivatives.

The newly synthesized compounds were characterized by elemental analysis, NMR spectroscopy and mass spectrometry.