申请人:Nissan Chemical Industries, Ltd.
公开号:US06331628B1
公开(公告)日:2001-12-18
A novel process for the preparation of benzonitrile compounds useful for herbicides or their intermediates is provided. A process for the preparation of compounds of the formula (1), characterized in comprising reacting a compound of the formula (1a) with one or more cyanides selected from potassium cyanide, sodium cyanide and zinc cyanide in the presence of a metallic catalyst.
In the scheme, X is hydrogen, fluorine or chlorine atom; Z is nitro, amino or C1-C4 alkylsulfonylamino group or the like; Y is fluorine, chlorine or bromine atom or the like; and Q is hydrogen atom, or nitro or amino group or the like.
提供一种用于制备对除草剂有用的苯腈化合物或其中间体的新工艺。一种用于制备化合物的工艺,其化学式为(1),其特征在于包括将化合物的化学式(1a)与钾氰化物、氰化钠和氰化锌中的一个或多个氰化物在金属催化剂存在下反应。在该方案中,X为氢、氟或氯原子;Z为硝基、氨基或C1-C4烷基磺酰胺基团等;Y为氟、氯或溴原子等;Q为氢原子,或硝基或氨基团等。