Hydrogen Bromide → HCID 12691336, compound

Temperature

0 °C

To a solution of 2-(3-aminophenyl)-1,1,1,3,3,3-hexafluoropropan-2-ol (3.1 g, 12 mmol) in HBr (48%, 24 mL) and H2O (4.8 mL) was added NaNO2 (990 mg, 14 mmol) in H2O (3 mL) dropwise at 0° C. The mixture was stirred at 0° C. for 30 minutes and was then added to a solution of CuBr (6.9 g, 48 mmol) in HBr (48%, 24 mL) and H2O (4.8 mL) at 0° C. The mixture was stirred at 0° C. for 30 min. The mixture was partitioned between ethyl acetate and H2O. The aqueous layer was extracted with ethyl acetate (3×). The combined organic layers were washed with brine and dried over MgSO4. Solvent was removed and the residue was purified by column chromatography (0-20% ethyl acetate-hexane) to yield 2-(3-bromophenyl)-1,1,1,3,3,3-hexafluoropropan-2-ol (3.1 g, 79%). 1H NMR (400 MHz, CDCl3) δ 7.83 (s, 1H), 7.57 (t, J=0.8 Hz, 1H), 7.55 (t, J=0.9 Hz, 1H), 7.27 (t, J=8.0 Hz, 1H), 3.62 (s, 1H).

1. stirringThe mixture was stirred at 0° C. for 30 min
2. customThe mixture was partitioned between ethyl acetate and H2O
3. extractionThe aqueous layer was extracted with ethyl acetate (3×)
4. washThe combined organic layers were washed with brine
5. dry with materialdried over MgSO4
6. customSolvent was removed
7. customthe residue was purified by column chromatography (0-20% ethyl acetate-hexane)

ORD record

ord-e5f8c3d24dbe40c898a14c6577ba528f

Source dataset

uspto-grants-2011_06

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US07956052B2