Water → ethyl 2-methyl-4-(3-methyl-2-oxo-4-phenylpyridin-1(2H)-yl)-2-(methylsulfonyl)butanoate

HRID 84276Notes

Reaction equation

O.C(=O)([O-])[O-].[K+].[K+].[C:8]1(B(O)O)[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1.I[C:18]1[CH:23]=[CH:22][N:21]([CH2:24][CH2:25][C:26]([CH3:36])([S:32]([CH3:35])(=[O:34])=[O:33])[C:27]([O:29][CH2:30][CH3:31])=[O:28])[C:20](=[O:37])[C:19]=1[CH3:38]>O1CCOCC1.[Pd]>[CH3:36][C:26]([S:32]([CH3:35])(=[O:34])=[O:33])([CH2:25][CH2:24][N:21]1[CH:22]=[CH:23][C:18]([C:8]2[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=2)=[C:19]([CH3:38])[C:20]1=[O:37])[C:27]([O:29][CH2:30][CH3:31])=[O:28]

Participants

Conditions

Temperature: 80 °C

Procedure

Water (1 mL) was added to a suspension of potassium carbonate (392 mg, 2.84 mg), phenylboronic acid (76.1 mg, 0.624 mmol), and ethyl 4-(4-iodo-3-methyl-2-oxopyridin-1(2H)-yl)-2-methyl-2-(methylsulfonyl)butanoate (250 mg, 0.567 mmol) in 1,4-dioxane (5 mL) at ambient temperature. To this mixture was added Pd EnCat™ (154 mg, 0.06 mmol) and the mixture was stirred at 80° C. overnight. The mixture was cooled to ambient temperature, filtered, diluted with ethyl acetate and washed with water. To the organic extract was added silica gel and the mixture was concentrated to dryness. The material was purified via silica gel chromatography eluting with ethyl acetate/heptanes to afford ethyl 2-methyl-4-(3-methyl-2-oxo-4-phenylpyridin-1(2H)-yl)-2-(methylsulfonyl)butanoate as an oil. 118.3 mg

Workup

temperatureThe mixture was cooled to ambient temperature
filtrationfiltered
additiondiluted with ethyl acetate
washwashed with water
extractionTo the organic extract
additionwas added silica gel
concentrationthe mixture was concentrated to dryness
customThe material was purified via silica gel chromatography
washeluting with ethyl acetate/heptanes

Sources & evidence

ORD record: ord-20894532b4124719be2a56b4ac5698b7
Source dataset: uspto-grants-2014_09
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08846933B2

Reaction notes

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