Potassium Cyanide → 1-(4-chloro-2-fluoro-5-propargyloxyphenyl)-4,5-dicyano-3-propyl-1,3-dihydro-2H-imidazol-2-one

HRID 465690Notes

Reaction equation

HRID 465690 reaction equation
[Cl:1][C:2]1[C:7]([O:8][CH2:9][C:10]#[CH:11])=[CH:6][C:5]([N:12]2[C:16](Cl)=[C:15]([C:18]#[N:19])[N:14]([CH2:20][CH2:21][CH3:22])[C:13]2=[O:23])=[C:4]([F:24])[CH:3]=1.[C-:25]#[N:26].[K+]>CN(C)C=O>[Cl:1][C:2]1[C:7]([O:8][CH2:9][C:10]#[CH:11])=[CH:6][C:5]([N:12]2[C:16]([C:25]#[N:26])=[C:15]([C:18]#[N:19])[N:14]([CH2:20][CH2:21][CH3:22])[C:13]2=[O:23])=[C:4]([F:24])[CH:3]=1

Participants

4

Reactant 2

HCID 9032Potassium CyanideHCID 198752291-(4-chloro-2-fluoro-5-propargyloxyphenyl)-5-chloro-4-cyano-3-propyl-1,3-dihydro-2 H-imidazol-2-one2×

Product 1

HCID 198752701-(4-chloro-2-fluoro-5-propargyloxyphenyl)-4,5-dicyano-3-propyl-1,3-dihydro-2H-imidazol-2-one

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

The product of Example 4, 1-(4-chlorophenyl)-5-chloro-4-cyano-3-phenyl-1,3-dihydro-2H-imidazol-2-one (V) (0.94 g, 2.8 mmol) was stirred in 25 mL dimethylformamide. To this mixture was added KCN (0.6 g, 8.5 mmol) and the resulting mixture was heated to reflux for ten minutes. The mixture was then allowed to cool, poured onto water, extracted with ethyl acetate, dried, filtered, and evaporated via standard techniques. Recrystallization with ethyl acetate/heptane gave 0.5 g of 1-(4-chlorophenyl)-4,5-dicyano-3-phenyl-1,3-dihydro-2H-imidazol-2-one (VI) as an orange solid (m.p. 182°-4° C.).

Workup

  1. temperaturethe resulting mixture was heated
  2. temperatureto reflux for ten minutes
  3. temperatureto cool
  4. additionpoured onto water
  5. extractionextracted with ethyl acetate
  6. customdried
  7. filtrationfiltered
  8. customevaporated via standard techniques
  9. customRecrystallization with ethyl acetate/heptane

Sources & evidence

ORD record
ord-35d6801409414c48a4975a0d03eec4ea
Source dataset
uspto-grants-1992_10
Patent number
US05153316

Reaction notes

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