A process for producing benzamidoximes represented by general formula (II), which are useful as intermediates of pesticides and drugs, at a stable and high yield by reacting benzonitriles represented by general formula (I) with hydroxylamine in the presence of a chelating agent wherein X represents halogeno, C1-5alkyl, C1-3 alkoxy, C1-3 alkylthio, hydroxy, mercapto, amino, nitro or C1-5haloalkyl; and n is 0 or an integer of from 1 to 5.
2,3-DIHALOGENO-6-TRIFLUOROMETHYLBENZENE DERIVATIVES AND PROCESSES FOR THE PREPARATION THEREOF
申请人:NIPPON SODA CO., LTD.
公开号:EP0881207A1
公开(公告)日:1998-12-02
2,3-Dihalogeno-6-trifluoromethylbenzaldehydes of general formula (I) useful as intermediates for the preparation of fungicides for agricultural and horticultural use;a process for the preparation of the same; and process for preparing 2,3-dihalogeno-6-trifluoromethylbenzamidoxi mes of general formula (IV) from the above compounds, wherein X1 and X2are each independently fluoro, chloro or bromo.
A process for producing benzamidoximes represented by general formula (II), which are useful as intermediates of pesticides and drugs, at a stable and high yield by reacting benzonitriles represented by general formula (I) with hydroxylamine in the presence of a chelating agent wherein X represents halogeno, C 1-5 alkyl, C 1-3 alkoxy, C 1-3 alkylthio, hydroxy, mercapto, amino, nitro or C 1-5 haloalkyl; and n is 0 or an integer of from 1 to 5.