Potassium Phosphate, Tribasic → (E)-(4'-{1-ethyl-1-[4-(3-ethyl-3-hydroxy-1-pentenyl)-3-methyl-phenyl]-propyl}-biphenyl-4-yl)acetic acid methyl ester

HRID 546910Notes

Reaction equation

HRID 546910 reaction equation
C1(P(C2CCCCC2)C2C=CC=CC=2C2C(OC)=CC=CC=2OC)CCCCC1.P([O-])([O-])([O-])=O.[K+].[K+].[K+].[CH3:38][O:39][C:40](=[O:49])[CH2:41][C:42]1[CH:47]=[CH:46][C:45](Br)=[CH:44][CH:43]=1.[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]>O.C1(C)C=CC=CC=1.C([O-])(=O)C.[Pd+2].C([O-])(=O)C>[CH3:38][O:39][C:40](=[O:49])[CH2:41][C:42]1[CH:47]=[CH:46][C:45]([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:44][CH:43]=1

Participants

8

Reactant 4

HCID 62657Potassium Phosphate, TribasicHCID 316783Methyl 2-(4-bromophenyl)acetateHCID 112698722-Dicyclohexylphosphino-2',6'-dimethoxybiphenylHCID 57708914(E)-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

Product 1

HCID 57709038(E)-(4'-{1-ethyl-1-[4-(3-ethyl-3-hydroxy-1-pentenyl)-3-methyl-phenyl]-propyl}-biphenyl-4-yl)acetic acid methyl esterYield 93.1%

Reagents, catalysts & solvents 3

HCID 167845palladium(II) acetateCatalystHCID 962WaterSolventHCID 1140TolueneSolvent2×

Conditions

Temperature
100 °C

Procedure

A solution of palladium acetate (3.3 mg, 0.0146 mmol), 2-dicyclohexylphosphino-2′,6′-dimethoxybiphenyl (12.0 mg, 0.0293 mmol) and potassium phosphate (62.3 mg, 0.29 mmol) in water (0.05 mL) and toluene (0.20 mL) was stirred for three minutes. A solution of (4-bromo-phenyl)acetic acid methyl ester (Tetrahedron Letters 44 (2003) 331-334; 36.0 mg, 0.15 mmol) and (E)-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); 50.0 mg, 0.1049 mmol) in toluene (0.20 mL) was added, and the mixture was stirred in a nitrogen atmosphere at 100° C. for 1.5 hours. After filtration through cotton plug, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel chromatography (17% ethyl acetate/hexane) to give the title compound (48.7 mg, 93%).

Workup

  1. filtrationAfter filtration through cotton plug
  2. concentrationthe filtrate was concentrated under reduced pressure
  3. customThe residue was purified by silica gel chromatography (17% ethyl acetate/hexane)

Sources & evidence

ORD record
ord-8c3fd5995ba94af2933901dbc8003faa
Source dataset
uspto-grants-2011_05
Patent number
US07935688B2

Reaction notes

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