Potassium Phosphate, Tribasic → HCID 57709149, compound

HRID 547019Notes

Reaction equation

HRID 547019 reaction equation
[CH3:1][O:2][C:3](=[O:12])[CH2:4][C:5]1[CH:10]=[CH:9][CH:8]=[C:7](Br)[CH:6]=1.C1(P(C2CCCCC2)C2C=CC=CC=2C2C(OC)=CC=CC=2OC)CCCCC1.P([O-])([O-])([O-])=O.[K+].[K+].[K+].[CH2:50]([C:52]([OH:84])([CH2:82][CH3:83])[CH:53]=[CH:54][C:55]1[CH:60]=[CH:59][C:58]([C:61]([CH2:79][CH3:80])([C:64]2[CH:69]=[CH:68][C:67](B3OC(C)(C)C(C)(C)O3)=[CH:66][CH:65]=2)[CH2:62][CH3:63])=[CH:57][C:56]=1[CH3:81])[CH3:51].C(=O)(O)[O-].[Na+]>C1(C)C=CC=CC=1.C([O-])(=O)C.[Pd+2].C([O-])(=O)C.O>[CH3:1][O:2][C:3](=[O:12])[CH2:4][C:5]1[CH:6]=[C:7]([C:67]2[CH:66]=[CH:65][C:64]([C:61]([CH2:79][CH3:80])([C:58]3[CH:59]=[CH:60][C:55](/[CH:54]=[CH:53]/[C:52]([CH2:82][CH3:83])([OH:84])[CH2:50][CH3:51])=[C:56]([CH3:81])[CH:57]=3)[CH2:62][CH3:63])=[CH:69][CH:68]=2)[CH:8]=[CH:9][CH:10]=1

Participants

9

Reactant 5

HCID 62657Potassium Phosphate, TribasicHCID 516892Sodium BicarbonateHCID 112698722-Dicyclohexylphosphino-2',6'-dimethoxybiphenylHCID 11746402Methyl 2-(3-bromophenyl)acetateHCID 670650643-Ethyl-1-(4-{1-ethyl-1-[4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-phenyl]-propyl}-2-methyl-phenyl)-1-penten-3-ol

Product 1

HCID 57709149HCID 57709149, compoundYield 81.3%

Reagents, catalysts & solvents 3

HCID 167845palladium(II) acetateCatalystHCID 962WaterSolventHCID 1140TolueneSolvent

Conditions

Temperature
100 °C

Procedure

(3-Bromo-phenyl)acetic acid methyl ester (Tetrahedron Letters 44 (2003) 331-334; 26 mg, 0.114 mmol), palladium acetate (1.8 mg, 0.008 mmol), 2-dicyclohexylphosphino-2′,6′-dimethoxy-1,1′-biphenyl (6.2 mg, 0.015 mmol), potassium phosphate (48 mg, 0.228 mmol) and water (0.2 mL) were added to a solution of 3-ethyl-1-(4-{1-ethyl-1-[4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-phenyl]-propyl}-2-methyl-phenyl)-1-penten-3-ol (Example 39-(5); 36.3 mg, 0.076 mmol) in toluene (2 mL). After replacement with nitrogen, the mixture was stirred at 100° C. for 2.5 hours. The reaction mixture was then poured into a saturated aqueous sodium bicarbonate solution, followed by extraction with dichloromethane. The organic layer was dried over anhydrous magnesium sulfate, filtered and concentrated under reduced pressure. The resulting residue was purified by silica gel chromatography (hexane:ethyl acetate=4:1) to give the target compound as a colorless oil (30.8 mg, 81%).

Workup

  1. extractionfollowed by extraction with dichloromethane
  2. dry with materialThe organic layer was dried over anhydrous magnesium sulfate
  3. filtrationfiltered
  4. concentrationconcentrated under reduced pressure
  5. customThe resulting residue was purified by silica gel chromatography (hexane:ethyl acetate=4:1)

Sources & evidence

ORD record
ord-155d719da9294264832dbbbd6804a2ac
Source dataset
uspto-grants-2011_05
Patent number
US07935688B2

Reaction notes

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