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    • 88. 发明公开
    • PROCESS FOR PRODUCING HALOGENATED HETEROARYL COMPOUNDS
    • VERFAHREN ZUR HERSTELLUNG VON HALOGENIERTEN HETEROARYLVERBINDUNGEN
    • EP0945434A1
    • 1999-09-29
    • EP97946159.7
    • 1997-12-09
    • BANYU PHARMACEUTICAL CO., LTD.
    • OKADA, Shigemitsu, Banyu Pharm. Co. Ltd Okazaki stUSHIJIMA, Ryosuke, Banyu Pharm. Co. LtdISHIKAWA, Kiyofumi, Banyu Pharm. Co Ltd R&D Lab
    • C07D213/61C07D215/48C07D239/34B01J27/16
    • C07D213/79C07D213/61C07D213/85C07D215/48C07D241/44
    • The present invention relates to a process for producing a compound represented by the following general formula [II]:
      wherein X is a halogen atom, each of A 1 , A 2 and A 3 may be identical or different, is a carbon atom or a nitrogen atom, provided that at least one of A 1 , A 2 and A 3 is a nitrogen atom, and each of R 1 , R 2 , R 3 and R 4 may be identical or different, is a hydrogen atom, a lower alkyl group, a cyano group, a carboxyl group, a lower alkoxycarbonyl group, a carbamoyl group, a halogen atom, a nitro group, a hydroxyl group or an amino-(lower alkyl) group, provided that in cases where R 1 and R 2 are adjacent to each other, R 1 and R 2 may be combined with each other to form a 5- or 6-membered ring which may carry on the ring thereof one substituent selected from the group consisting of a lower alkyl group, a nitrile group, a carboxyl group, a lower alkoxycarbonyl group, a carbamoyl group, a halogen atom, a nitro group, a hydroxyl group and an amino-(lower alkyl) group; characterized by reacting a compound represented by the following general formula [I]:
      wherein A 1 , A 2 , A 3 , R 1 , R 2 , R 3 and R 4 are as defined above, with a quaternary ammonium halide in the presence of phosphorus pentoxide.
    • 本发明涉及一种制备由以下通式表示的化合物的方法:其中X是卤素原子,A 1,A 2和A 3中的每一个可以相同或不同 是碳原子或氮原子,条件是A 1,A 2和A 3中的至少一个为氮原子,R 1,R 2,R 3, 3>和R 4可以相同或不同,是氢原子,低级烷基,氰基,羧基,低级烷氧基羰基,氨基甲酰基,卤素原子,硝基,羟基 基团或氨基 - (低级烷基)基团,条件是在R 1和R 2彼此相邻的情况下,R 1和R 2可以彼此结合形成5 - 或6元环,其可以带有一个选自低级烷基,腈基,羧基,低级烷氧基羰基,氨基甲酰基,卤素原子,硝基的取代基 ,羟基和氨基 - (低级烷基)基团; 其特征在于使由以下通式表示的化合物:其中A 1,A 2,A 3,R 1,R 2,R 3和R 4, >如上定义,在五氧化二磷的存在下与季铵卤化物反应。