[CH2:1]([C:3]1[N:7]([CH2:8][CH2:9][CH3:10])[N:6]=[C:5]([C:11]([NH2:13])=O)[CH:4]=1)[CH3:2]>P(Cl)(Cl)(Cl)=O>[CH2:1]([C:3]1[N:7]([CH2:8][CH2:9][CH3:10])[N:6]=[C:5]([C:11]#[N:13])[CH:4]=1)[CH3:2]5-Ethyl-1-propyl-1H-pyrazole-3-carboxamide (5.50 g, 30.35 mmol) was treated with phosphorous oxychloride (20 mL) according to the procedure described in Part D of Examples 37-39 to yield 4.89 g of 5-ethyl-1-propyl-1H-pyrazole-3-carbonitrile as an oil.
Wird geladen…