[C:1]([C:4]1[CH:9]=[CH:8][CH:7]=[CH:6][N:5]=1)(=[O:3])[CH3:2].CO[CH:12](OC)[N:13]([CH3:15])[CH3:14]>>[CH3:12][N:13]([CH3:15])[CH:14]=[CH:2][C:1]([C:4]1[CH:9]=[CH:8][CH:7]=[CH:6][N:5]=1)=[O:3]A mixture of 25 g. of 2-acetylpyridine and 35 ml. of N,N-dimethylformamide dimethylacetal is refluxed for 16 hours. The mixture is cooled and filtered to give 3-dimethylamino-1-(2-pyridyl)-2-propen-1-one as crystals, m.p. 127°-130° C.
Wird geladen…