1,1-Dimethylhydrazine → 6-Methyl-4-oxo-N-phenyl-2-propyl-4H-pyran-3-carboxamide
反応式
[O:1]=[C:2]([CH2:13][CH2:14][CH3:15])[CH2:3][C:4]([NH:6][C:7]1[CH:12]=[CH:11][CH:10]=[CH:9][CH:8]=1)=[O:5].CN(C)N>C1(C)C=CC=CC=1>[CH3:15][C:14]1[O:1][C:2]([CH2:13][CH2:14][CH3:15])=[C:3]([C:4]([NH:6][C:7]2[CH:12]=[CH:11][CH:10]=[CH:9][CH:8]=2)=[O:5])[C:2](=[O:1])[CH:13]=1参加物
4
反応条件
- 温度
- 60 °C
実験手順
A mixture of 2.05 g (10 m mol) of 3-oxo-N-phenylhexanamide (m.p. 77.0°-78.5° C.), 0.9 g (15 m mol) of N,N-dimethylhydrazine and 15 ml of toluene was stirred for 8 hours at 60° C. Then, unreacted N,N-dimethylhydrazine and the resulted water, together with about 2 ml of toluene were distilled off outside the reaction system. A solution of 3.90 g (25 m mol) of 2-ethyl-2,6-dimethyl-4H-1,3-dioxin-4-one in 8 ml of toluene was dropwise added to the remaining solution over a period of 30 minutes, while refluxing. The mixture was further refluxed for 2.5 hours and 3 ml of toluene was distilled off outside the reaction system. The reaction mixture was cooled to room temperature. The resulted crystals were filtered off, washed and dried to obtain 1.32 g (Yield: 49%) of the title compound.