Synthesis of acid halides

The methyl chloride carbonylation into acetyl chloride has been known 

Starting Material Product Catalyst Conditions °C bar Yield % Ref. 

Allylic and aromatic acid halides have been obtained using palladium catalysts [39, 40]. In the presence of sodium fluoride aromatic chlorides can directly be converted into acid fluorides but yields and selectivities are low despite severe reaction conditions [41]. 

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R. Sustmann, Synthesis of Acid Halides, Anhydrides and Related Compounds, in Comprehensive Organic Synthesis (B. M. Trost, I. Fleming, Eds.), Vol. 6, 301, Pergamon Press, Oxford, 1991. 

Synthesis of Acid Halides, Anhydrides and Related Compounds... 

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