反应详情

900 mg of 9-cyano-2-methoxy-10,11-dihydro-11-oxo-dibenzo[b,f]thiepin was dissolved in the mixed solvent of 8 ml of ethanol and 8 ml of dioxane. To this was added 1.0 g of 100% hydrazine hydrate and the resulting mixture was refluxed with stirring for 7.5 hours. After the completion of reaction, the solvent was distilled off to obtain the residue, which was washed with a small amount of ethanol, and there was obtained 750 mg of 9-cyano-2-methoxy-10,11-dihydro-11-oxo-dibenzo[b,f]thiepin hydrazone as colorless needles having a melting point of 186°-187° C.

1. temperaturethe resulting mixture was refluxed
2. customAfter the completion of reaction
3. distillationthe solvent was distilled off
4. customto obtain the residue, which
5. washwas washed with a small amount of ethanol