反应详情

A solution of 7 g of 4-(2-chloronicotinoyl)-2,6-di-tertiary butylphenol and 2.4 g of phenylhydrazine in 40 ml of pyridine is refluxed for 7 hours. After the pyridine is distilled off under reduced pressure, to the residue is added water and the precipitated crystals are washed with water to give crude crystals of 4-(2-chloronicotinoyl)-2,6-di-tertiary butylphenol phenylhydrazone, melting at 181° C. with decomposition in an almost quantitative amount.

1. distillationAfter the pyridine is distilled off under reduced pressure, to the residue
2. additionis added water
3. washthe precipitated crystals are washed with water