Reaktion #47781

Reaktionsgleichung

lithium hydroxide

5-Bromo-3-(4-ethoxy-3-methyl-phenoxymethyl)-4′-methoxy-biphenyl

4-trifluoromethoxyphenylboronic acid

Potassium carbonate

→

[4-(4-methoxy-4″-trifluoromethoxy-[1,1′;3′,1″]terphenyl-5′-ylmethoxy)-2-methyl-phenoxy]-acetic acid

Lösungsmittel

dioxane

ethanol

water

Reaktionsbedingungen

Aufarbeitung

1. 1
   Sonstige(170° C. for 10 min)
2. 2
   TemperaturCooling
3. 3
   workup.STIRRINGstirring for 3 hours at room temperature
4. 4
   Sonstigefollowed by reversed-phase purification

Vorschrift

5-Bromo-3-(4-ethoxy-3-methyl-phenoxymethyl)-4′-methoxy-biphenyl 15 (50 mg, 0.11 mmol) and 4-trifluoromethoxyphenylboronic acid (30 mg, 0.15 mmol, 1.3 equiv.) are dissolved in dioxane (0.5 mL). Potassium carbonate (38 mg, 0.27 mmol), water (0.05 mL) and ethanol (0.05 mL) are added, followed by tetrakis (triphenylphosphino)palladium (15.6 mg, 0.13 mmol). The mixture is stirred under nitrogen and subjected to microwave (170° C. for 10 min). Cooling, addition of 0.25 mL of aqueous 1N lithium hydroxide solution, and stirring for 3 hours at room temperature, followed by reversed-phase purification yielded [4-(4-methoxy-4″-trifluoromethoxy-[1,1′;3′,1″]terphenyl-5′-ylmethoxy)-2-methyl-phenoxy]-acetic acid A2. 1H-NMR (400 MHz, CDCl3) δ=7.50 (m, 3H), 7.42 (m, 4H), 7.17 (d, J=8.0 Hz, 2H), 6.87 (d, J=8.0 Hz, 2H), 6.75 (d, J=2.8 Hz, 1H), 6.65 (dd, J=8.8, 2.8 Hz, 1H), 6.58 (d, J=8.8 Hz, 1H), 5.17 (s, 2H), 4.50 (s, 2H), 3.73 (s, 3H), 2.16 (s, 3H). 19F-NMR (376 MHz, CDCl3) δ=−57.8. MS calculated for C30H26F3O6 (M+H+) 539.17. found 539.0.

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