申请人:Nippon Soda Co., Ltd.
公开号:US05744608A1
公开(公告)日:1998-04-28
The present invention is directed to methods for manufacturing 3-(aminomethyl)-6-chloropyridines represented by a general formula \x9bII!; ##STR1## wherein R.sup.2 represents hydrogen or a lower alkyl and R.sup.3 represents hydrogen, a lower alkyl or an halogen atom, characterized in that the compound represented by the general formula \x9bII! is manufactured by allowing 3-(substituted-aminomethyl)pyridine 1-oxide represented by a general formula \x9bI!; ##STR2## wherein R.sup.1 represents alkyl, aryl, aralkyl or alkoxy, R.sup.2 and R.sup.3 are as described above, to react with a base represented by a general formula \x9ba!; R\'R"R\'"N \x9ba! wherein R', R" and R'" may be the same or different one another and represent each independently a lower alkyl or an aromatic group, or R', R" , R'" and N may form together an optionally-substituted pyridine ring, in the presence of an electrophilic reagent having at least one chlorine atom, and subsequently treating the reaction product with hydrogen chloride and water. The compounds manufactured according to the present invention are useful as the raw materials used for the manufacturing of agricultural chemicals and pharmaceuticals, and particularly useful for the raw materials for manufacturing insecticides.
本发明涉及一种制备由通式\x9bII!表示的3-(氨甲基)-6-氯吡啶的方法;其中R.sup.2代表氢或低碳基,R.sup.3代表氢、低碳基或卤原子,其特征在于通过允许由通式\x9bI!表示的3-(取代氨甲基)吡啶1-氧化物制备由通式\x9bII!表示的化合物;其中R.sup.1代表烷基、芳基、芳基烷基或烷氧基,R.sup.2和R.sup.3如上所述,与由通式\x9ba!表示的碱发生反应;其中R'、R"和R'"可以相同也可以不同,分别独立地代表低碳基或芳基,或者R'、R"、R'"和N可以共同形成一个可选择取代的吡啶环,在存在至少一个氯原子的亲电试剂的情况下,并随后用氯化氢和水处理反应产物。根据本发明制备的化合物可用作制造农药和药品的原料,特别适用于制造杀虫剂的原料。