Diethyl (ethoxymethylene)malonate → HCID 68131296, compound
Reaction equation
[N:1]1[CH:6]=[CH:5][C:4]([CH2:7][N:8]2[C:12]([NH2:13])=[CH:11][CH:10]=[N:9]2)=[CH:3][CH:2]=1.[CH2:14]([O:16][C:17](=[O:28])[C:18](=[CH:24]OCC)[C:19]([O:21][CH2:22][CH3:23])=[O:20])[CH3:15]>>[CH2:14]([O:16][C:17](=[O:28])[C:18](=[CH:24][NH:13][C:12]1[N:8]([CH2:7][C:4]2[CH:5]=[CH:6][N:1]=[CH:2][CH:3]=2)[N:9]=[CH:10][CH:11]=1)[C:19]([O:21][CH2:22][CH3:23])=[O:20])[CH3:15]Participants
3
Procedure
174 g of 1-(4-picolyl)-5-aminopyrazole and 216 g of ethoxymethylene malonic acid diethyl ester are heated with stirring at 140°, until the theoretical amount of alcohol has distilled off. The reaction mixture crystallizes on cooling. Recrystallization from ethyl acetate yields 220 g of [[[1-(4-picolyl)-5-pyrazolyl]amino]methylene]malonic acid diethyl ester (65%), m.p. 95°-97°.
Workup
- distillationhas distilled off
- customThe reaction mixture crystallizes
- temperatureon cooling
- customRecrystallization from ethyl acetate