1-[5-(4-t-Butylphenyl)-4-hydroxy-1-methyl-1H-pyrazol-3-yl]ethanone → N'-{1-[5-(4-t-butylphenyl)-4-hydroxy-1-methyl-1H-pyrazol-3-yl]ethylidene}-4-(1H-tetrazol-5-yl)benzhydrazide

Participants

Reaction Conditions

Reaction Steps

1-[5-(4-t-Butylphenyl)-4-hydroxy-1-methyl-1H-pyrazol-3-yl]ethanone (0.404 mmol, 110 mg) and 4-(1-H-tetrazol-5-yl)benzhydrazide (0.404 mmol, 83 mg) synthesized in accordance with WO03/037328 were dissolved in dimethylformamide (5 mL) and stirred at 100° C. for 26 hours. The insolubles were filtered off and washed with methanol, and the filtrate was concentrated and separated by silica gel thin layer chromatography (chloroform/MeOH=4/1) to give the desired product as a yellow solid (25 mg, yield 13%).

Provenance & Evidence