申请人:Deutsche Gold- und Silber- Scheideanstalt vormals Roessler
公开号:US04122116A1
公开(公告)日:1978-10-24
There are prepared acyl cyanides of the formula ##STR1## where R is a straight or branched chain alkyl group having 1 to 18 carbon atoms, preferably 1 to 10 carbon atoms, and which also can be substituted by one or more phenyl groups or halogen atoms, preferably chlorine, or R is preferably a cycloalkyl group having 3 to 8 carbon atoms, preferably cyclopropyl, which can have one or more 1 to 3 carbon atoms alkyl or halogen, preferably chlorine, substituents wherein in all of the above set forth substitutions the halogen atoms and the phenyl groups are not on the carbon atom adjacent to the carbonyl group or R is a substituted phenyl group, a naphthyl group, a substituted naphthyl group or a five membered heterocyclic group, e.g., furyl, thienyl or alkyl substituted thienyl wherein the substituents on the phenyl or naphthyl are halogen atoms, nitro groups or alkyl or alkoxy groups having 1 to 5 carbon atoms. The process comprises reacting and acyl halide of the formula R--CO--Hal (II) in which R is as defined above and Hal is a chlorine or bromine atoms, with CuCN at a temperature of about 50.degree. to 180.degree. C in the presence of a carboxylic acid nitrile inert under the reaction conditions, there being employed about 1 to 10 parts by weight of the carboxylic acid nitrile and about 0.5 to 20 parts by weight of at least one organic solvent which is inert under the reaction conditions. Certain of the compounds are novel per se.
有配制的酰基氰化物,其化学式为##STR1##其中R是直链或支链烷基,含有1至18个碳原子,最好是1至10个碳原子,并且还可以被一个或多个苯基或卤素原子(最好是氯)取代,或者R最好是含有3至8个碳原子的环烷基,最好是环丙基,可以有一个或多个1至3个碳原子的烷基或卤素(最好是氯)取代基。在上述所有取代中,卤素原子和苯基不在邻近羰基的碳原子上,或者R是一个取代苯基、萘基、取代萘基或五元杂环基,例如呋喃基、噻吩基或烷基取代的噻吩基,其中苯基或萘基上的取代基是卤素原子、硝基基团或含有1至5个碳原子的烷基或烷氧基。该方法包括在反应条件下,在存在反应条件下惰性的羧酸腈的情况下,将化学式为R--CO--Hal(II)的酰卤与CuCN在约50至180摄氏度的温度下反应,所述酰卤中的R如上所定义,Hal是氯或溴原子,所使用的约1至10份重量的羧酸腈和约0.5至20份重量的至少一种在反应条件下惰性的有机溶剂。其中某些化合物本身是新颖的。