Potassium Carbonate → 1-((4-Bromo-2,5-dichlorophenoxy)methyl)adamantane

Temperatur

125 °C

A mixture of 4-bromo-2,5-dichlorophenol (1.35 g, 5.58 mmol), adamantan-1-ylmethyl methanesulfonate (Fr. Demande, 2909090, 30 May 2008) (1.5 g, 6.14 mmol), and potassium carbonate (0.85 g, 6.14 mmol) in N,N-dilmethylformamide (10 mL) was stirred at 65° C. for 16 h and at 125° C. for 48 h. The reaction mixture was cooled down to ambient temperature, diluted with water (40 mL) and extracted with ethyl acetate (2×50 mL). The combined organic layers were washed with brine (50 mL), dried over anhydrous magnesium sulfate, filtered and concentrated in vacuo. The residue was purified by column chromatography eluting with a 5% to 10% gradient of ethyl acetate in hexanes to afford 1-((4-bromo-2,5-dichlorophenoxy)methyl)adamantine as a colorless solid (1.7 g, 71%): MS (ES+) m/z 391.3 (M+1);

1. temperatureThe reaction mixture was cooled down to ambient temperature
2. extractionextracted with ethyl acetate (2×50 mL)
3. washThe combined organic layers were washed with brine (50 mL)
4. dry with materialdried over anhydrous magnesium sulfate
5. filtrationfiltered
6. concentrationconcentrated in vacuo
7. customThe residue was purified by column chromatography
8. washeluting with a 5% to 10% gradient of ethyl acetate in hexanes
9. customto afford 1-((4-bromo-2,5-dichlorophenoxy)methyl)adamantine as a colorless solid (1.7 g, 71%)

ORD-Eintrag

ord-2d4ca2c844d5491b812dc7bc6ffe5c34

Quelldatensatz

uspto-grants-2015_01

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US08933236B2