反应详情

At room temperature, to a mixture of 3-butyl-pentane-2,4-dione 7 g and ethanol 70 ml was added hydrazine one hydrate 3.3 g and the resulting mixture was stirred for twelve hours. The reaction mixture was subjected to a silica gel column chromatography to give 4-butyl-3,5-dimethyl-1H-pyrazole 7 g.