Chlorosuccinimide → 3-[5-chloro-4-(2,4-difluoro-benzyloxy)-2-methyl-6-oxo-6H-pyrimidin-1-yl]-4-methyl-benzoic acid methyl ester

HRID 2172594Notes

Reaction equation

HRID 2172594 reaction equation
[CH3:1][O:2][C:3](=[O:29])[C:4]1[CH:9]=[CH:8][C:7]([CH3:10])=[C:6]([N:11]2[C:16](=[O:17])[CH:15]=[C:14]([O:18][CH2:19][C:20]3[CH:25]=[CH:24][C:23]([F:26])=[CH:22][C:21]=3[F:27])[N:13]=[C:12]2[CH3:28])[CH:5]=1.[Cl:30]N1C(=O)CCC1=O>C(O)(C)C.ClC(Cl)C(O)=O>[CH3:1][O:2][C:3](=[O:29])[C:4]1[CH:9]=[CH:8][C:7]([CH3:10])=[C:6]([N:11]2[C:16](=[O:17])[C:15]([Cl:30])=[C:14]([O:18][CH2:19][C:20]3[CH:25]=[CH:24][C:23]([F:26])=[CH:22][C:21]=3[F:27])[N:13]=[C:12]2[CH3:28])[CH:5]=1

Participants

5

Reactant 2

HCID 31398ChlorosuccinimideHCID 21089018Methyl 3-[4-[(2,4-difluorobenzyl)oxy]-2-methyl-6-oxopyrimidin-1(6H)-yl]-4-methylbenzoate

Product 1

HCID 210901983-[5-chloro-4-(2,4-difluoro-benzyloxy)-2-methyl-6-oxo-6H-pyrimidin-1-yl]-4-methyl-benzoic acid methyl esterYield 82%

Reagents, catalysts & solvents 2

HCID 6597Dichloroacetic AcidCatalystHCID 3776IsopropanolSolvent

Conditions

Temperature
60 °C

Procedure

To a solution of 3-[4-(2,4-difluoro-benzyloxy)-2-methyl-6-oxo-6H-pyrimidin-1-yl]-4-methyl-benzoic acid methyl ester from Example 1, Step A (260 mg, 0.65 mmol) in isopropanol (5 mL) was added N-chlorosuccinimide (95 mg, 0.71 mmol) and 3 drops of dichloroacetic acid. The solution was heated at 60° C. for three hours. The solution was concentrated in vacuo and the residue was partitioned between ethyl acetate and water. The organic layer was washed with water and brine and dried over magnesium sulfate. The slurry was filtered and concentrated to provide the chlorinated product as a light yellow semi-solid (230 mg, 82%). MS (M+H): 435

Workup

  1. concentrationThe solution was concentrated in vacuo
  2. customthe residue was partitioned between ethyl acetate and water
  3. washThe organic layer was washed with water and brine
  4. dry with materialdried over magnesium sulfate
  5. filtrationThe slurry was filtered
  6. concentrationconcentrated

Sources & evidence

ORD record
ord-015134128ec44ec29500c8eacc47b2ed
Source dataset
uspto-grants-2015_06
Patent number
US09056110B2

Reaction notes

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