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公开(公告)号:US20090177005A1
公开(公告)日:2009-07-09
申请号:US12344631
申请日:2008-12-29
申请人: Guido MAYER , Oliver Cullmann , Bernd Wolf , Michael Keil , Wassilios Grammenos
发明人: Guido MAYER , Oliver Cullmann , Bernd Wolf , Michael Keil , Wassilios Grammenos
IPC分类号: C07C249/02
CPC分类号: C07C249/12 , C07C251/48
摘要: A process for preparing 2-(chloromethyl)phenylacetic acid derivatives of the formula I, where X is C1-C4-alkoxy or methylamino, by ether cleavage of compounds of the formula II, where R is C1-C4-alkyl, C1-C4-alkoxy, C1-C2-haloalkyl, C1-C4-alkylcarbonyl, C1-C4-alkylcarbonyloxy, halogen, nitro or cyano; n is 2 to 5; and X is as defined above comprises carrying out the reaction in the presence of hydrogen chloride and an inert solvent, and adding a catalyst to the reaction mixture selected from the group consisting of iron, indium and halides, oxides and triflates, thereof.
摘要翻译: 通过醚式裂解式II化合物制备式I的2-(氯甲基)苯乙酸衍生物的方法,其中X为C 1 -C 4烷氧基或甲氨基,其中R为C 1 -C 4 - 烷基,C 1 -C 4 - 烷氧基,C 1 -C 2 - 卤代烷基,C 1 -C 4 - 烷基羰基,C 1 -C 4 - 烷基羰基氧基,卤素,硝基或氰基; n为2〜5; 并且X如上所定义,包括在氯化氢和惰性溶剂的存在下进行反应,并向选自铁,铟和卤化物,氧化物和三氟甲磺酸酯的反应混合物中加入催化剂。