Process for the preparation of acyl cyanides

Details Process for the preparation of acyl cyanides Process for the preparation of acyl cyanides

1979-04-25

1981-11-24

Jiles, Henry R.

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

Organic compounds

Four or more ring nitrogens in the bicyclo ring system

260545R, 2603473, 2603265J, 544182, 548325, 548331, 548343, 548378, 548262, 548255, 548128, 548225, 548240, 546245, C07D30730, C07D20710, C07D25306, C07D23504

Patent

active

043025838

ABSTRACT:
Novel process for the preparation of a monomeric acyl cyanide of the general formula ##STR1## in which R represents optionally substituted alkyl with up to 8 carbon atoms, optionally substituted cycloalkyl with 3 to 12 carbon atoms, optionally substituted aryl or an optionally substituted 5-membered or 6-membered heterocyclic radical, which optionally can be fused with a benzene ring,
which process comprises heating the corresponding dimeric acyl cyanide of the general formula ##STR2## in which R has the meaning stated above, to a temperature of from 50.degree. to 300.degree. C. in the presence of a compound having a basic reaction and rapidly removing the monomeric acyl cyanide (I) formed from the reaction mixture.

REFERENCES:
patent: 2426014 (1947-08-01), Gresham
patent: 3234265 (1966-02-01), Krekeler et al.
Angewandte Chemie, 68, Johrgang, No. 13, pp. 425-448, Jul. 7, 1956.
Berichte Deut. Chemische Gesell., 18, 256 (1885).

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