(2,6-Dichlorophenyl)acetonitrile → HCID 12904732, compound
Reaction equation
[NH2:1][C:2]1[C:7]([CH:8]=O)=[C:6]([CH3:10])[N:5]=[CH:4][N:3]=1.[Cl:11][C:12]1[CH:17]=[CH:16][CH:15]=[C:14]([Cl:18])[C:13]=1[CH2:19][C:20]#[N:21]>>[Cl:11][C:12]1[CH:17]=[CH:16][CH:15]=[C:14]([Cl:18])[C:13]=1[C:19]1[C:20]([NH2:21])=[N:1][C:2]2[N:3]=[CH:4][N:5]=[C:6]([CH3:10])[C:7]=2[CH:8]=1Participants
3
Procedure
4-Amino-6-methylpyrimidine-5-carboxaldehyde is then condensed with 2,6-dichlorophenylacetonitrile. The crude product is isolated by concentrating the reaction mixture to dryness and partitioning the residue between chloroform and water. Drying and concentration of the organic layer gives a residue which is chromatographed on silica gel. The product is eluted with 1/99 mixture of methanol/chloroform and recrystallized from ethanol to give pure 6-(2,6-dichlorophenyl)-4-methylpyrido[2,3-d]pyrimidin-7-amine, mp 280°-282° C.
Workup
- customThe crude product is isolated
- concentrationby concentrating the reaction mixture to dryness
- custompartitioning the residue between chloroform and water
- customDrying
- customconcentration of the organic layer gives a residue which
- customis chromatographed on silica gel
- washThe product is eluted with 1/99 mixture of methanol/chloroform
- customrecrystallized from ethanol
Sources & evidence
- ORD record
- ord-8bb78417a1464f29ab55e852ef6bc21c
- Source dataset
- uspto-grants-1981_06
- Patent number
- US04271164
Reaction notes
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