Trichloroacetyl chloride → HCID 68380040, compound

Temperature

40 °C

Zinc-copper couple (1.71 g, 13.1 mmol) was added to a solution of benzyl 2-ethenyl-4-fluorophenyl ether (C17) (1.0 g, 4.38 mmol) in diethyl ether (15 mL). To this mixture was added drop-wise a mixture of phosphorus oxychloride (446 μL, 4.82 mmol) and trichloroacetyl chloride (978 μL, 8.76 mmol) in diethyl ether (5 mL). The mixture was stirred at 40° C. for 2 hours, cooled to room temperature and stirred for an additional 18 hours. The solution was filtered through Celite, and the filtrate was washed with water (2×100 mL) and saturated aqueous sodium chloride solution (100 mL), dried over magnesium sulfate and concentrated in vacuo to afford the title compound as a colorless oil. Yield: 1.4 g, 4.13 mmol, 94%. 1H NMR (400 MHz, CDCl3) δ 3.57 (dd, half of ABX pattern, J=18.0, 10.5 Hz, 1H), 3.65 (dd, half of ABX pattern, J=18.0, 9.4 Hz, 1H), 4.49 (dd, J=10.1, 9.8 Hz, 1H), 5.14 (AB quartet, JAB=12.0 Hz, ΔνAB=12.2 Hz, 2H), 6.91-6.95 (m, 2H), 7.01 (ddd, J=9.0, 7.8, 2.9 Hz, 1H), 7.32-7.44 (m, 3H), 7.45-7.49 (m, 2H).

1. additionTo this mixture was added drop-wise
2. temperaturecooled to room temperature
3. stirringstirred for an additional 18 hours
4. filtrationThe solution was filtered through Celite
5. washthe filtrate was washed with water (2×100 mL) and saturated aqueous sodium chloride solution (100 mL)
6. dry with materialdried over magnesium sulfate
7. concentrationconcentrated in vacuo

ORD record

ord-c83a51ae234040789dcd6a8faff2f2e7

Source dataset

uspto-grants-2015_06

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US09067934B2