3-Chloro-4-fluorobenzoyl chloride synthesis

Yield: 83.4%

Reaction Conditions:

with FeCl₃

Steps:

1 EXAMPLE 1
EXAMPLE 1 100 g of 4-fluoro-benzoyl chloride and 0.5 g of FeCl₃ are charged in a 250 ml flask. The mass is heated to a temperature of 80° C. and chlorine is fluxed at a rate of about 1 Nl/h. After 16 hours of reaction, the raw product is cooled, degassed with nitrogen and discharged. The product is vacuum distilled (15 mmHg) to separate the non converted reactant. 35 g of 4-fluoro-benzoyl chloride, 66 g of 3-chloro-4-fluoro-benzoyl chloride (I) and 10 g of impurities are obtained. Yield: 83.4%.

References:

Miteni S.p.A. US6066764, 2000, A