申请人:Ihara Chemical Industry Co., Ltd.
公开号:US05675012A1
公开(公告)日:1997-10-07
The present invention provides a process for producing a cyanopyridine represented by general formula (3) ##STR1## (wherein R is a hydrogen atom or a halogen atom; X.sup.1 and X.sup.2 are each a hydrogen atom or a halogen atom with a proviso that at least either of X.sup.1 and X.sup.2 is a halogen atom; n is an integer of 1 or 2), which process comprises reacting an ammonium halide with a trichloromethylpyridine represented by general formula (1) ##STR2## (wherein R, X.sup.1, X.sup.2 and n have the same definitions as given above) in the presence of a metal compound represented by general formula (2) MXm (2) (wherein M is a copper atom or a zinc atom; X is a halogen atom or an oxygen atom; m is an integer of 2 or 1).
本发明提供了一种生产氰吡啶的方法,其通式表示为(3)
(其中R是氢原子或卤原子;X1和X2分别是氢原子或卤原子,但至少X1和X2中的一个是卤原子;n是1或2的整数),该方法包括在金属化合物的存在下,将铵卤化物与通式表示为(1)的三氯甲基吡啶反应
(其中R、X1、X2和n的定义与上述相同);通式表示为(2)MXm的金属化合物(其中M是铜原子或锌原子;X是卤原子或氧原子;m是2或1的整数)。