Process for the preparation of acyl cyanides

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

C - Chemistry, Metallurgy

07

C

260/559.3, 260/5

C07C 51/58 (2006.01)

Patent

CA 1196338

Abstract of the Disclosure A novel process for the preparation of acyl cyanides of the general formula R - C0 - CN (I) wherein R represents an optionally substituted alkyl radical wlth ? to 8 carbon atoms, an optionally substituted cycloa1kyl radical with 3 to 12 carbon atoms, an optionally substituted aryl radical or an optionally substituted 5-membered or 6-membered heterocyclic radical, which can additionally be fused to a benzene ring, in which a carboxylic acid fluoride or the general formula R - CO - F (II) in which R has the abovementioned meaning is reacted with an alkali metal cyanide, optionally in the presence of a diluent, at a temperature between 10 and 200°C. The acylcyanides (I) can be used as intermediates in the synthesis of known herbicides.

376095

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