Ethanol → Benzoic acid, 2-bromo-4-iodo-, ethyl ester

Temperature

80 °C

To a stirred solution of 4-iodo-2-bromobenzoic acid (5 g, 15.29 mmol) in EtOH (100 mL) was added H2SO4 (5 mL), and the reaction mixture was heated at 80° C. for 18 h. The reaction mixture was cooled to 25° C. and concentrated under reduced pressure. The residue was diluted with EtOAc (2×100 mL) and washed with water (100 mL). The combined EtOAc extracts were washed with brine, dried over Na2SO4 and concentrated under reduced pressure to afford the compound as a pale yellow solid (5 g, 92%): 1H NMR (400 MHz, DMSO-d6) δ 8.04 (d, J=1.2 Hz, 1H), 7.71 (d, J=7.6 Hz, 1H), 7.51 (d, J=8.4 Hz, 1H), 4.41 (q, J=7.2 Hz, 2H), 1.41 (t, J=7.2 Hz, 3H).

1. temperatureThe reaction mixture was cooled to 25° C.
2. concentrationconcentrated under reduced pressure
3. additionThe residue was diluted with EtOAc (2×100 mL)
4. washwashed with water (100 mL)
5. washThe combined EtOAc extracts were washed with brine
6. dry with materialdried over Na2SO4
7. concentrationconcentrated under reduced pressure

ORD record

ord-be46594a666645569ea481e2346f7e65

Source dataset

uspto-grants-2016_01

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US09226500B2