Potassium Carbonate → 2'-Acetyl-3-chloro-4-(3,5-difluoro-pyridin-2-ylmethoxy)-5'-methyl-[1,4']bipyridinyl-2-one

HRID 516983Notes

Reaction equation

[C:1]([C:4]1[CH:9]=[C:8]([N:10]2[CH:15]=[CH:14][C:13]([OH:16])=[C:12]([Cl:17])[C:11]2=[O:18])[C:7]([CH3:19])=[CH:6][N:5]=1)(=[O:3])[CH3:2].Cl[CH2:21][C:22]1[C:27]([F:28])=[CH:26][C:25]([F:29])=[CH:24][N:23]=1.C(=O)([O-])[O-].[K+].[K+]>CN(C)C=O.C1OCCOCCOCCOCCOCCOC1>[C:1]([C:4]1[CH:9]=[C:8]([N:10]2[CH:15]=[CH:14][C:13]([O:16][CH2:21][C:22]3[C:27]([F:28])=[CH:26][C:25]([F:29])=[CH:24][N:23]=3)=[C:12]([Cl:17])[C:11]2=[O:18])[C:7]([CH3:19])=[CH:6][N:5]=1)(=[O:3])[CH3:2]

Participants

Conditions

Temperature: 60 °C

Procedure

To a solution of 2′-acetyl-3-chloro-4-hydroxy-5′-methyl-[1,4′]bipyridinyl-2-one of part D (500 mg, 1.7 mmol) in N,N-dimethylformamide (3 mL) was added 2-chloromethyl-3,5-difluoro-pyridine (277 mg, 1.7 mmol), potassium carbonate (590 mg, 4.28 mmol) and 18-crown-6 (10 mg) and the reaction was stirred at 60° C. for 4 h. After cooling the solution was partitioned between ethyl acetate and water. The organic layer was washed with water and brine and dried over magnesium sulfate. The solution was filtered and concentrated in vacuo. The crude material was purified using normal phase chromatography (ethyl acetate/heptane) to provide alkylated product as a yellow solid (397 mg): MS (ES) m/e 420 (M+H).

Workup

temperatureAfter cooling the solution
customwas partitioned between ethyl acetate and water
washThe organic layer was washed with water and brine
dry with materialdried over magnesium sulfate
filtrationThe solution was filtered
concentrationconcentrated in vacuo
customThe crude material was purified

Sources & evidence

ORD record: ord-90c3921b347b445b9224ee3d0a6ce4da
Source dataset: uspto-grants-2015_08
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09115089B2

Reaction notes

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