Synthesis of 4-(1-phenyl-1H-pyrazol-3-yl)-[1,2,4]triazolo[4,3-a] quinoxalines and their 4-halogenopyrazolyl analogs

摘要

Synthesis of {3-[1-(ethoxycarbonyl)-[1,2,4]triazolo[4,3-a]quinoxalin-4-yl]- 1-phenyl-1H-pyrazol-5-yl}methyl ethyl oxalate (2), ethyl 4-[5-(acetoxymethyl)-1- phenyl-1H-pyrazol-3-yl]-[1,2,4]triazolo[4,3-a]quioxaline-1-carboxylate (4), [4-halo-1-phenyl-3-(1-phenyl-[1,2,4]triazolo[4,3-a]quioxalin-4-yl) -1H-pyrazol-5-yl]methyl acetate (11), {4-halo-3-[1-methyl-[1,2,4]triazolo[4,3-a] quinoxalin-4-yl]-1-phenyl-1H-pyraz-ol-5-yl}methyl acetate (13), and [3-([1,2,4]triazolo-[4,3-a]quinoxalin-4-yl)-4-halo-1-phenyl-1H-pyrazol-5-yl] methyl formate (15) was accomplished. The structural investigation of the new compounds is based on chemical and spectroscopic evidences.