Cyanoacetamide → 5-(4-Chlorophenyl)-2-oxo-1,2-dihydropyridine-3-carbonitrile

HRID 1505

Reaction equation

HRID 1505 reaction equation
C[O-].[Na+].[C:4]([CH2:6][C:7]([NH2:9])=[O:8])#[N:5].[Cl:10][C:11]1[CH:16]=[CH:15][C:14]([C:17](=[CH:20]N(C)C)[CH:18]=O)=[CH:13][CH:12]=1.CC(OCC1C2C(=CC=CC=2)C(COC(C)=O)=C2C=1C=CC=C2)=O>CO.O>[C:4]([C:6]1[C:7](=[O:8])[NH:9][CH:18]=[C:17]([C:14]2[CH:15]=[CH:16][C:11]([Cl:10])=[CH:12][CH:13]=2)[CH:20]=1)#[N:5]

Participants

7

Reactant 4

HCID 7898CyanoacetamideHCID 613145Acetic acid 10-acetoxymethyl-anthracen-9-ylmethyl esterHCID 34489722-(4-Chlorophenyl)-3-(dimethylamino)acrylaldehydeHCID 10942334Sodium Methoxide

Product 1

HCID 27639105-(4-Chlorophenyl)-2-oxo-1,2-dihydropyridine-3-carbonitrile

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 962WaterSolvent

Procedure

To solution of sodium methoxide (7.52 g) in methanol (130 ml) was added cyanoacetamide (5.84 g) followed by 2-(4-chlorophenyl)-3-dimethylaminopropenal and the resulting suspension was refluxed overnight. During this time a yellow solid was formed. The mixture was cooled to room temperature and glacial acetic add (50 ml) was added followed by water (100 ml). The resulting yellow orange solid was filtered off, washed several times with water and dried to yield 8.1 g of 3-cyano-5-(4-chlorophenyl)-2-pyridinone.

Workup

  1. temperaturethe resulting suspension was refluxed overnight
  2. customDuring this time a yellow solid was formed
  3. additionwas added
  4. filtrationThe resulting yellow orange solid was filtered off
  5. washwashed several times with water
  6. customdried

Sources & evidence

ORD record
ord-119328d4f6c144a381d29ff2f0cd48ad
Source dataset
uspto-grants-1998_03
Patent number
US05726162

Linked notes

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