2-Bromo-4-fluorobenzaldehyde used as pharmaceutical intermediates.It could be the starting material to synthesise 2-Bromo-4-fluorobenzonitrile, 6-Fluoroisobenzofuran-1(3H)-one, etc.
The general procedure for the synthesis of 2-bromo-4-fluorobenzaldehyde from 2-bromo-4-fluorobenzyl alcohol was as follows: benzyl alcohol substrate (0.2 mmol), FeCl3-6H2O (0.002 mmol, 5.4 mg) and triphenylmethanol (0.2 mmol, 52 mg) were mixed in a dry reaction vessel. Subsequently, the reaction mixture was irradiated in a microwave reactor at 55 °C for 1 hour. Upon completion of the reaction, the crude product was purified by fast column chromatography to afford the target product 2-bromo-4-fluorobenzaldehyde.
[1] Tetrahedron, 2015, vol. 71, # 38, p. 6744 - 6748
[2] Synthesis (Germany), 2013, vol. 45, # 24, p. 3387 - 3391