Hydrochloric Acid → 4-(5-(3,6-dimethyl-2,4-dioxo-1-(3-trifluoromethylphenyl)-1,2,3,4-tetrahydropyrimidin-5-yl)-4-fluoro-1H-pyrazol-1-yl)benzonitrile

HRID 576810Notes

Reaction equation

HRID 576810 reaction equation
[CH3:1][N:2]1[C:7](=[O:8])[C:6]([C:9]2[N:13]([C:14]3[CH:21]=[CH:20][C:17]([C:18]#[N:19])=[CH:16][CH:15]=3)[N:12]=[CH:11][CH:10]=2)=[C:5]([CH3:22])[N:4]([C:23]2[CH:28]=[CH:27][CH:26]=[C:25]([C:29]([F:32])([F:31])[F:30])[CH:24]=2)[C:3]1=[O:33].[B-](F)(F)(F)[F:35].[B-](F)(F)(F)F.C1[N+]2(CCl)CC[N+](F)(CC2)C1.Cl.C(OCC)(=O)C>C(#N)C>[CH3:1][N:2]1[C:7](=[O:8])[C:6]([C:9]2[N:13]([C:14]3[CH:15]=[CH:16][C:17]([C:18]#[N:19])=[CH:20][CH:21]=3)[N:12]=[CH:11][C:10]=2[F:35])=[C:5]([CH3:22])[N:4]([C:23]2[CH:28]=[CH:27][CH:26]=[C:25]([C:29]([F:30])([F:31])[F:32])[CH:24]=2)[C:3]1=[O:33]

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 8857Ethyl AcetateHCID 2724933SelectfluorHCID 712514174-[5-[3,6-dimethyl-2,4-dioxo-1-(3-trifluoromethylphenyl)-1,2,3,4-tetrahydropyrimidin-5-yl]-1H-pyrazol-1-yl]benzonitrile

Product 1

HCID 715143304-(5-(3,6-dimethyl-2,4-dioxo-1-(3-trifluoromethylphenyl)-1,2,3,4-tetrahydropyrimidin-5-yl)-4-fluoro-1H-pyrazol-1-yl)benzonitrileYield 22.9%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Conditions

Temperature
80 °C

Procedure

To a solution of 4-(5-(3,6-dimethyl-2,4-dioxo-1-(3-trifluoromethylphenyl)-1,2,3,4-tetrahydropyrimidin-5-yl)-1H-pyrazol-1-yl)benzonitrile (prepared in Example 1) (1.0 g) in acetonitrile (20 ml) was added Selectfluor (trade mark) (1.2 g) and the resulting mixture was stirred at 80° C. for four hours. To the reaction mixture was added 10% hydrochloric acid followed by an addition of ethyl acetate (20 ml×2) such the intended products were extracted into an organic layer. The organic layer was washed with saturated saline (20 ml), dried over anhydrous sodium sulfate and then concentrated under reduced pressure. The residue was purified by silica gel column chromatography (eluent: hexane/ethyl acetate) to afford 4-(5-(3,6-dimethyl-2,4-dioxo-1-(3-trifluoromethylphenyl)-1,2,3,4-tetrahydropyrimidin-5-yl)-4-fluoro-1H-pyrazol-1-yl)benzonitrile (238 mg). UPLC/MS 470 (M+H)/1.023 min. (measurement condition 9)

Workup

  1. extractionwere extracted into an organic layer
  2. washThe organic layer was washed with saturated saline (20 ml)
  3. dry with materialdried over anhydrous sodium sulfate
  4. concentrationconcentrated under reduced pressure
  5. customThe residue was purified by silica gel column chromatography (eluent: hexane/ethyl acetate)

Sources & evidence

ORD record
ord-7c5c41d69c9846859482ca1e38b578c4
Source dataset
uspto-grants-2015_05
Patent number
US09040516B2

Reaction notes

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