Potassium Carbonate → 4-(4-Bromo-3-[1,3]dioxolan-2-yl-phenoxy)-2-methoxy-benzoic acid ethyl ester

To a solution of compound 2 (9.27 g, 37.83 mmol) in DMSO (50 mL) was added potassium carbonate (15.68 g, 113.48 mmol). The resulting mixture was stirred at rt for 30 min. followed by addition of compound 5 (8.99 g, 45.39 mmol). The resulting mixture was heated at 120° C. O/N. The reaction mixture was diluted with EtOAc (100 mL) and washed with water (50 mL). The organic layer was dried over Na2SO4, and concentrated under reduced pressure to give crude product, which was purified by column chromatography (silica gel, 10% EtOAc in hexane) to afford the title compound 6 (5.6 g, 35%) as a pale yellow solid. 1H NMR 400 MHz (CDCl3) δ:

1. temperatureThe resulting mixture was heated at 120° C
2. washwashed with water (50 mL)
3. dry with materialThe organic layer was dried over Na2SO4
4. concentrationconcentrated under reduced pressure
5. customto give crude product, which
6. customwas purified by column chromatography (silica gel, 10% EtOAc in hexane)

ORD-Eintrag

ord-9d7e3aea31d94645aa44fb331b2bfffe

Quelldatensatz

uspto-grants-2016_08

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US09416146B2