Reaction equation
C(O[CH:4]=[C:5]([C:11](=[O:15])[CH2:12][CH2:13][CH3:14])[C:6]([O:8][CH2:9][CH3:10])=[O:7])C.[CH2:16]([O:18][C:19]1[CH:20]=[CH:21][C:22]([NH2:26])=[N:23][C:24]=1[CH3:25])[CH3:17]>>[CH2:16]([O:18][C:19]1[CH:20]=[CH:21][C:22]([NH:26][CH:4]=[C:5]([C:11](=[O:15])[CH2:12][CH2:13][CH3:14])[C:6]([O:8][CH2:9][CH3:10])=[O:7])=[N:23][C:24]=1[CH3:25])[CH3:17]Participants
3
Procedure
Ethyl 2-(ethoxymethylene)-3-oxohexanoate (22.4 g) was added to a suspension of 5-ethoxy-6-methylpyridin-2-amine (14.9 g) in IMS (50 ml). After the initial exotherm had subsided IMS (100 ml) was added and the mixture boiled under reflux until a solution was obtained. This solution was cooled and filtered to give ethyl 2-(5-ethoxy-6-methylpyrid-2-ylaminomethylene)-3-oxohexanoate, m.p. 117°-120° C.
Workup
- additionwas added
- temperatureunder reflux until a solution
- customwas obtained
- temperatureThis solution was cooled
- filtrationfiltered
Sources & evidence
- ORD record
- ord-bfd9709289484cfd9994972d7ffdb45d
- Source dataset
- uspto-grants-1995_11
- Patent number
- US05464781
Linked notes
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