Water → [4-(3,5-Bis(4-trifluoromethylphenyl)-benzyloxy)-2-methyl-phenoxy]-acetic acid methyl ester

HRID 19501

Reaktionsgleichung

Reaktionsgleichung von HRID 19501
[CH3:1][O:2][C:3](=[O:23])[CH2:4][O:5][C:6]1[CH:11]=[CH:10][C:9]([O:12][CH2:13][C:14]2[CH:19]=[C:18](Br)[CH:17]=[C:16](Br)[CH:15]=2)=[CH:8][C:7]=1[CH3:22].[F:24][C:25]([F:36])([F:35])[C:26]1[CH:31]=[CH:30][C:29](B(O)O)=[CH:28][CH:27]=1.O.C(=O)([O-])[O-].[K+].[K+]>O1CCOCC1.C1(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)C=CC=CC=1.C(O)C>[CH3:1][O:2][C:3](=[O:23])[CH2:4][O:5][C:6]1[CH:11]=[CH:10][C:9]([O:12][CH2:13][C:14]2[CH:19]=[C:18]([C:29]3[CH:30]=[CH:31][C:26]([C:25]([F:36])([F:35])[F:24])=[CH:27][CH:28]=3)[CH:17]=[C:16]([C:29]3[CH:30]=[CH:31][C:26]([C:25]([F:36])([F:35])[F:24])=[CH:27][CH:28]=3)[CH:15]=2)=[CH:8][C:7]=1[CH3:22]

Komponenten

8

Edukt 4

HCID 962WaterHCID 11430Potassium CarbonateHCID 27343894-(Trifluoromethyl)phenylboronic acidHCID 59007639[4-(3,5-Dibromo-benzyloxy)-2-methyl-phenoxy]-acetic acid methyl ester

Produkt 1

HCID 59007659[4-(3,5-Bis(4-trifluoromethylphenyl)-benzyloxy)-2-methyl-phenoxy]-acetic acid methyl ester

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 178420554HCID 178420554, VerbindungKatalysatorHCID 702EthanolLösungsmittelHCID 312751,4-DioxaneLösungsmittel

Versuchsvorschrift

[4-(3,5-Dibromo-benzyloxy)-2-methyl-phenoxy]-acetic acid methyl ester 13 (0.0375 g, 0.088 mmol) is dissolved in dioxane (1 mL). 4-Trifluoromethyl-phenylboronic acid (0.0514 g, 0.27 mmol) is added, followed by water (0.01 mL), ethanol (0.01 mL), potassium carbonate (0.0557 g, 0.4 mmol), and tetrakis-(triphenylphosphino)palladium (0.117 g, 0.01 mmol). The mixture is stirred under nitrogen and subjected to microwave (170° C. for 10 min). The resulting orange suspension is filtered, the solids are washed with more dioxane, and the resulting solution is concentrated and purified by silica gel chromatography (10% to 25% ethyl acetate in hexanes) to yield [4-(3,5-bis(4-trifluoromethylphenyl)-benzyloxy)-2-methyl-phenoxy]-acetic acid methyl ester as an oil. 1H-NMR (400 MHz, CDCl3) δ=7.77-7.64 (m, 8H), 7.52 (s, 2H), 7.34 (s, 1H), 6.88 (d, J=2.8 Hz, 1H), 6.76 (dd, J=9.0, 2.8 Hz, 1H), 6.68 (d, J=9.2 Hz, 1H), 5.14 (s, 2H), 4.61 (s, 2H), 3.80 (s, 3H), 2.95 (s, 3H). 19F-NMR (376 MHz, CDCl3) δ=−62.4.

Aufarbeitung

  1. custom(170° C. for 10 min)
  2. filtrationThe resulting orange suspension is filtered
  3. washthe solids are washed with more dioxane
  4. concentrationthe resulting solution is concentrated
  5. custompurified by silica gel chromatography (10% to 25% ethyl acetate in hexanes)

Quellen und Nachweise

ORD-Eintrag
ord-7a832f42aae44ab2a68129c86662f279
Quelldatensatz
uspto-grants-2010_06
Patentnummer
US07745445B2

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