Water → HCID 68708391, compound

HRID 2097561Notes

Reaction equation

HRID 2097561 reaction equation
Br[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[C:8](=[O:28])[CH2:9][CH2:10][C:11]1[N:12]=[C:13]([C:16]2[CH:21]=[CH:20][C:19]([O:22][CH2:23][CH3:24])=[C:18]([O:25][CH2:26][CH3:27])[CH:17]=2)[S:14][CH:15]=1.O.C(OCC)(=O)C.[CH3:36][N:37](C=O)C>[C-]#N.[Zn+2].[C-]#N.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[CH2:26]([O:25][C:18]1[CH:17]=[C:16]([C:13]2[S:14][CH:15]=[C:11]([CH2:10][CH2:9][C:8]([C:3]3[CH:4]=[CH:5][CH:6]=[CH:7][C:2]=3[C:36]#[N:37])=[O:28])[N:12]=2)[CH:21]=[CH:20][C:19]=1[O:22][CH2:23][CH3:24])[CH3:27]

Participants

7

Reactant 4

HCID 962WaterHCID 6228DimethylformamideHCID 8857Ethyl AcetateHCID 68709161HCID 68709161, compound

Product 1

HCID 68708391HCID 68708391, compoundYield 53%

Reagents, catalysts & solvents 2

HCID 11186Zinc cyanide (Zn(CN)2)CatalystHCID 178418397HCID 178418397, compoundCatalyst

Conditions

Temperature
100 °C

Procedure

Zinc (II) cyanide (purity of 60%) (140 mg, 0.7 mmol) and tetrakis(triphenylphosphine)palladium (19 mg, 0.016 mmol) were added to a solution (1 ml) of 1-(2-bromophenyl)-3-[2-(3,4-diethoxyphenyl)thiazole-4-yl]propane-1-one (150 mg, 0.33 mmol) in DMF, and the mixture was stirred with heating in an argon atmosphere at 100° C. for 2 hours. After cooling to room temperature, water and ethyl acetate was added to the reaction mixture, the resulting mixture was filtered through Celite, and the filtrate was separated into layers. The organic layer was washed with a saturated salt solution and dried over anhydrous magnesium sulfate. The solvent was distilled off under reduced pressure, and the residue was purified by silica gel column chromatography (eluent: ethyl acetate/n-hexane=3/4). The solvent was distilled off under reduced pressure, and the residue was recrystallized from ethanol, to thereby obtain 70 mg (yield: 53%) of 2-{3-[2-(3,4-diethoxyphenyl)thiazole-4-yl]propionyl}benzonitrile as colorless needles.

Workup

  1. temperatureAfter cooling to room temperature
  2. filtrationthe resulting mixture was filtered through Celite
  3. customthe filtrate was separated into layers
  4. washThe organic layer was washed with a saturated salt solution
  5. dry with materialdried over anhydrous magnesium sulfate
  6. distillationThe solvent was distilled off under reduced pressure
  7. customthe residue was purified by silica gel column chromatography (eluent: ethyl acetate/n-hexane=3/4)
  8. distillationThe solvent was distilled off under reduced pressure
  9. customthe residue was recrystallized from ethanol

Sources & evidence

ORD record
ord-0884534de7b94a35abe0caa2075bfa20
Source dataset
uspto-grants-2013_05
Patent number
US08450352B2

Reaction notes

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