1,4-Dioxane → HCID 118035003, compound

HRID 521694Notes

Reaction equation

HRID 521694 reaction equation
[CH2:1]([S:3][C:4]1[CH:9]=[CH:8][CH:7]=[CH:6][C:5]=1B1OC(C)(C)C(C)(C)O1)[CH3:2].Br[C:20]1[CH:21]=[N:22][C:23]2[N:24]([CH:26]=[C:27]([C:29]([F:32])([F:31])[F:30])[N:28]=2)[CH:25]=1.P([O-])([O-])([O-])=O.[K+].[K+].[K+].O1CCOCC1>C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd].O.C(OCC)(=O)C>[CH2:1]([S:3][C:4]1[CH:9]=[CH:8][CH:7]=[CH:6][C:5]=1[C:20]1[CH:21]=[N:22][C:23]2[N:24]([CH:26]=[C:27]([C:29]([F:32])([F:31])[F:30])[N:28]=2)[CH:25]=1)[CH3:2]

Participants

8

Reactant 4

HCID 312751,4-DioxaneHCID 62657Potassium Phosphate, TribasicHCID 91667369HCID 91667369, compoundHCID 1237879692-(2-(Ethylthio)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane

Product 1

HCID 118035003HCID 118035003, compoundYield 37.4%

Reagents, catalysts & solvents 3

HCID 9811564Bis(dibenzylideneacetone)palladiumCatalystHCID 962WaterSolventHCID 8857Ethyl AcetateSolvent

Procedure

A mixture of 0.52 g of 2-ethylsulfanylphenylboronic acid pinacol ester, 0.44 g of 6-bromo-2-trifluoromethylimidazo[1,2-a]pyrimidine, 0.02 g of tris(dibenzylideneacetone)dipalladium(0), 0.05 g of 2-dicyclohexylphosphino-2′,4′,6′-triisopropylphenyl, 1.0 g of tripotassium phosphate and 6 ml of 1,4-dioxane was stirred under heat-reflux for 4 hours. Ethyl acetate and water were added to the cooled reaction mixture, and the mixture was filtered. The filtrate was extracted with ethyl acetate and then dried over anhydrous sodium sulfate. The mixture was concentrated under reduced pressure, and the resulting residue was applied to a silica gel column chromatography to obtain 0.20 g of 6-(2-ethylsulfanylphenyl)-2-trifluoromethylimidazo[1,2-a]pyrimidine (Compound of Present Invention 35).

Workup

  1. temperatureunder heat-reflux for 4 hours
  2. filtrationthe mixture was filtered
  3. extractionThe filtrate was extracted with ethyl acetate
  4. dry with materialdried over anhydrous sodium sulfate
  5. concentrationThe mixture was concentrated under reduced pressure

Sources & evidence

ORD record
ord-46fdd5a8dda54afbbe3d8cf3a0291408
Source dataset
uspto-grants-2016_05
Patent number
US09328121B1

Reaction notes

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