反应详情

Hydrazine (0.5 ml) was added slowly to a warm solution of 3 g of 5,6,7,8-tetrahydro-5-hydroxymethylene-1-methyl-4(1H)-cycloheptapyrazolone in 90 ml of methanol. The reaction was heated at reflux for 30 minutes and the solvent was removed under reduced pressure. The residue was triturated in warm ether to give 4,5,6,7-tetrahydro-7-methyl-1H-cyclohepta[1,2-c:3,4 c']dipyrazole as a tan powder (96% yield) melting at about 153°-155° C.

1. temperatureThe reaction was heated
2. temperatureat reflux for 30 minutes
3. customthe solvent was removed under reduced pressure
4. customThe residue was triturated in warm ether