4-Chloro-2-(methylthio)pyrimidine-5-carboxylic acid ethyl ester → HCID 86676021, compound

HRID 2402939Notes

Reaction equation

HRID 2402939 reaction equation
Cl[C:2]1[C:7]([C:8]([O:10][CH2:11][CH3:12])=[O:9])=[CH:6][N:5]=[C:4]([S:13][CH3:14])[N:3]=1.C([Sn](CCCC)(CCCC)[C:20]([O:22][CH2:23][CH3:24])=[CH2:21])CCC.[F-].[K+]>CN(C)C=O.O.CCOCC.Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1>[CH2:23]([O:22][C:20]([C:2]1[C:7]([C:8]([O:10][CH2:11][CH3:12])=[O:9])=[CH:6][N:5]=[C:4]([S:13][CH3:14])[N:3]=1)=[CH2:21])[CH3:24]

Participants

8

Reactant 3

HCID 800084-Chloro-2-(methylthio)pyrimidine-5-carboxylic acid ethyl esterHCID 522689Potassium FluorideHCID 619414Stannane, tributyl(1-ethoxyethenyl)-

Product 1

HCID 86676021HCID 86676021, compound

Reagents, catalysts & solvents 4

HCID 178418476HCID 178418476, compoundCatalystHCID 962WaterSolventHCID 3283Diethyl EtherSolventHCID 6228DimethylformamideSolvent

Procedure

A solution of ethyl 4-chloro-2-(methylthio)pyrimidine-5-carboxylate (3.0 g, 12.89 mmol), tributyl(1-ethoxyvinyl)stannane (4.79 ml, 14.18 mmol) and bis(triphenylphosphine)palladium dichloride (0.452 g, 0.645 mmol) in N,N-dimethylformamide (43 mL) was heated to 70° C. for 1 hour. The mixture was cooled, treated with a solution of KF (1.5 g in 3 mL water) and stirred overnight at room temperature. The mixture was diluted with water and ether and filtered through diatomaceous earth. The layers were separated and the aqueous layer was extracted into ether. The combined extracts were rinsed with brine, dried over MgSO4, filtered, and concentrated under reduced pressure. The residue was purified by flash chromatography (0-20% gradient ethyl acetate in hexane) to provide the title compound. MS ESI(+) m/z 269.0 [M+H]+.

Workup

  1. temperatureThe mixture was cooled
  2. filtrationfiltered through diatomaceous earth
  3. customThe layers were separated
  4. extractionthe aqueous layer was extracted into ether
  5. washThe combined extracts were rinsed with brine
  6. dry with materialdried over MgSO4
  7. filtrationfiltered
  8. concentrationconcentrated under reduced pressure
  9. customThe residue was purified by flash chromatography (0-20% gradient ethyl acetate in hexane)

Sources & evidence

ORD record
ord-4b2d5f6ea3664f1591a458463b6e75ff
Source dataset
uspto-grants-2014_08
Patent number
US08796289B2

Reaction notes

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