반응 #684762

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3,5-Diphenyl-2-pyrazoline

→

3,5-diphenylpyrazole

수율 79.3%

용매

ethylene dichloride

반응 조건

후처리

1. 1
   workup.ADDITIONis added
2. 2
   온도the mixture is heated
3. 3
   온도at reflux for 8 hours

실험 절차

3,5-Diphenyl-2-pyrazoline (21.9 parts) is dissolved in ethylene dichloride (75 parts by volume). There is next added 5% palladium on carbon catalyst (4 parts containing 40% water) is added and the mixture is heated at reflux for 8 hours. There is obtained 3,5-diphenylpyrazole in a 79.3% yield whose melting point ranges from 196° to 200° C.

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