1,1-Dimethylhydrazine → 6-Methyl-4-oxo-N-phenyl-2-propyl-4H-pyran-3-carboxamide
Reaction equation
[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]=1Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Conditions
- Temperature
- 60 °C
Procedure
A mixture of 2.05 g (10 m mol) of 3-oxo-N-phenyl hexanamide (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. and further heated to a more elevated temperature to distill off the unreacted N,N-dimethylhydrazine and the resulted water together with about 2 ml of toluene. While refluxing, to the mixture was dropwise added 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 during 30 minutes. While refluxing for 2.5 hours, 3 ml of toluene was removed. After cooling to room temperature, the precipitated crystals were separated, washed and dried under vacuo to afford 1.32 g of the title compound (yield: 49%).