Dimethylformamide → 4'-(Trifluoromethyl)-[1,1'-biphenyl]-2-carbonyl chloride

Participants

Reaction Steps

To a mixture of 4′-trifluoromethylbiphenyl-2-carboxylic acid (5.06 g), dimethylformamide (catalytic amount) and methylene chloride (30 mL) was added dropwise oxalyl chloride (2.43 mL) under ice-cooling. The mixture was stirred at room temperature for 100 minutes and the solvent was removed by evaporation. After azeotropic distillation with toluene, the residue was dried in vacuo to give the title compound (5.40 g).

Provenance & Evidence