Water → 2-[(4-{2-[(3'-Fluorobiphenyl-4-yl)oxy]ethyl}-1,3-thiazol-2-yl)thio]-2-methylpropionic acid tert-butyl ester

HRID 914305Notes

Reaction equation

HRID 914305 reaction equation
[C:1]([O:5][C:6](=[O:26])[C:7]([S:10][C:11]1[S:12][CH:13]=[C:14]([CH2:16][CH2:17][O:18][C:19]2[CH:24]=[CH:23][C:22](Br)=[CH:21][CH:20]=2)[N:15]=1)([CH3:9])[CH3:8])([CH3:4])([CH3:3])[CH3:2].[F:27][C:28]1[CH:29]=[C:30](OB(O)O)[CH:31]=[CH:32][CH:33]=1.O>O1CCCC1.C(=O)([O-])O.[Na+].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>[C:1]([O:5][C:6](=[O:26])[C:7]([S:10][C:11]1[S:12][CH:13]=[C:14]([CH2:16][CH2:17][O:18][C:19]2[CH:24]=[CH:23][C:22]([C:32]3[CH:31]=[CH:30][CH:29]=[C:28]([F:27])[CH:33]=3)=[CH:21][CH:20]=2)[N:15]=1)([CH3:9])[CH3:8])([CH3:4])([CH3:3])[CH3:2]

Participants

7

Reactant 3

HCID 962WaterHCID 222378213-Fluorophenylboric acidHCID 597593362-({4-[2-(4-Bromophenoxy)ethyl]-1,3-thiazol-2-yl}thio)-2-methylpropionic acid tert-butyl ester

Product 1

HCID 597592152-[(4-{2-[(3'-Fluorobiphenyl-4-yl)oxy]ethyl}-1,3-thiazol-2-yl)thio]-2-methylpropionic acid tert-butyl esterYield 64.1%

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 8028TetrahydrofuranSolventHCID 516892Sodium BicarbonateSolvent

Procedure

Under nitrogen atmosphere, 2-({4-[2-(4-bromophenoxy)ethyl]-1,3-thiazol-2-yl}thio)-2-methylpropionic acid tert-butyl ester (447 mg) synthesized in Example 67-1 and 3-fluorophenylboric acid (273 mg) were dissolved in tetrahydrofuran (10 mL) and sodium hydrogen carbonate (1 mol/l, 10 mL), tetrakis(triphenylphosphine)palladium (231 mg) was added, and the mixture was refluxed for 6.5 hr. The reaction mixture was cooled, water was added thereto, and the mixture was extracted with ethyl acetate. The organic layer was washed with saturated brine and dried over anhydrous sodium sulfate. The solvent was evaporated under reduced pressure, and the residue was purified by silica gel chromatography (elution solvent; hexane:ethyl acetate=10:1) to give the title compound (296 mg) as a pale-yellow oil.

Workup

  1. temperaturethe mixture was refluxed for 6.5 hr
  2. temperatureThe reaction mixture was cooled
  3. extractionthe mixture was extracted with ethyl acetate
  4. washThe organic layer was washed with saturated brine
  5. dry with materialdried over anhydrous sodium sulfate
  6. customThe solvent was evaporated under reduced pressure
  7. customthe residue was purified by silica gel chromatography (elution solvent; hexane:ethyl acetate=10:1)

Sources & evidence

ORD record
ord-b072392ccb6e4de8a2cd18199235c80b
Source dataset
uspto-grants-2011_09
Patent number
US08026370B2

Reaction notes

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