Preparation of acyl chlorides

Details Preparation of acyl chlorides Preparation of acyl chlorides

C - Chemistry, Metallurgy

07

C

260/124, 260/539

C07C 51/60 (2006.01) C07C 53/42 (2006.01) C07C 57/64 (2006.01)

Patent

CA 2000442

-11- Image where R is C8-C30-alkyl, C8-C30-alkenyl or C8-C30-alkynyl, from a carboxylic acid of the general formula II Image where R has the abovementioned meanings, and phosgene, COC1 2 (III), in the presence of a catalyst adduct of phosgene and N,N-dialkylformamide of the general formula IV Image where R1 and R2 independently of one another are each C1-C3-alkyl, the reaction product I being obtained by phase separation, by a process in which II and III are used in essentially equimolar amounts and the phase containing the catalyst adduct is reused.

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