Preparation of carbonyl chlorides

Details Preparation of carbonyl chlorides Preparation of carbonyl chlorides

1991-09-10

1993-09-14

Dees, Jose G.

Organic compounds -- part of the class 532-570 series

Organic compounds

Fatty compounds having an acid moiety which contains the...

554154, 554231, 562840, 562846, C07C 5100

Patent

active

052450635

ABSTRACT:
A process for preparing carbonyl chlorides of the formula I ##STR1## where R is C.sub.1 -C.sub.30 -alkyl, C.sub.2 -C.sub.30 -alkenyl or C.sub.2 -C.sub.30 -alkynyl, from essentially equimolar amounts of a carboxylic acid of the formula II ##STR2## where R has the abovementioned meanings, and phosgene COCl.sub.2 (III), in the presence of a catalytic adduct of phosgene and N,N-disubstituted formamide or the hydrochlorides thereof, of the formula IV where R.sup.1 and R.sup.2 are each, independently of one another, C.sub.1 -C.sub.3 -alkyl or together are a C.sub.4 -C.sub.5 -alkylene chain which may be interrupted by oxygen or by nitrogen which carries C.sub.1 -C.sub.3 -alkyl or CHO, and n is 0, 1 or 2, wherein the reaction is carried out with a stationary phase of the catalytic adduct, is described.

REFERENCES:
patent: 3547960 (1970-12-01), Hauser
patent: 3857841 (1974-12-01), Keil
Chemical Abstracts, vol. 114, #11, 1991, pp. 101, 147f.

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