Diethyl Ether → Methyl 3-bromo-4-fluorobenzoate

Participants

Reaction Steps

3-Bromo-4-fluoro-benzoic acid (2.5 g, 11.42 mmol) was placed in a 100 ml round bottom flask charged with a stir bar, sealed with a septum and placed under a nitrogen atmosphere and dissolved in 9 ml dry THF and 3 ml dry MeOH. A 2.0M solution of TMSdiazomethane in ether (6.28 ml, 12.56 mmol) was added dropwise to the stirring solution of the acid. Conversion of the acid to the ester was complete after twenty minutes according to LC/MS analysis. The solvent was removed under reduced pressure and product was used without further purification. Recovered a light oil (2.66 g, 100% yield) LC/MS (10-99%) M/Z 234, retention time 3.09 minutes.

Provenance & Evidence