Dimethylformamide → 4-(2-Cyanoethyl)-5-methyl-2-phenyloxazole

反応式

[CH3:1][C:2]1[O:6][C:5]([C:7]2[CH:12]=[CH:11][CH:10]=[CH:9][CH:8]=2)=[N:4][C:3]=1[CH2:13][CH2:14][C:15]([NH2:17])=O.CN(C)C=O.P(Cl)(Cl)(Cl)=O>O>[CH3:1][C:2]1[O:6][C:5]([C:7]2[CH:12]=[CH:11][CH:10]=[CH:9][CH:8]=2)=[N:4][C:3]=1[CH2:13][CH2:14][C:15]#[N:17]

参加物

実験手順

To a mixture of 3-(5-methyl-2-phenyl-4-oxazolyl)propanamide (5.0 g) and N,N-dimethylformamide (100 ml) was added phosphoryl chloride (3.33 g) at room temperature and the mixture was stirred at room temperature for 1 hr. To the reaction mixture was added water and the mixture was extracted with ethyl acetate. The organic layer was washed successively with water and saturated brine, dried over anhydrous magnesium sulfate, and concentrated to give crystals (4.10 g, 89%) of 3-(5-methyl-2-phenyl-4-oxazolyl)propionitrile. Recrystallization from ethyl acetate-hexane gave colorless prism crystals. melting point: 63-64° C.