| 摘要 |
<p>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.degree.C. The acylcyanides (I) can be used as intermediates in the synthesis of known herbicides.</p> |
