Process for the preparation of aniline compounds

Details Process for the preparation of aniline compounds Process for the preparation of aniline compounds

C - Chemistry, Metallurgy

07

C

C07C 209/36 (2006.01) A01N 43/80 (2006.01) B27K 3/34 (2006.01) B27K 3/42 (2006.01) C07D 307/88 (2006.01) C07C 211/45 (2006.01)

Patent

CA 2405972

A process for the preparation of aniline compounds of formula (I), wherein n and R are as defined in claim 1, by reacting nitro compounds of formula (II), wherein n and R are as defined, with hydrazine at elevated temperature in the presence of an aqueous base. The compounds of formula (I) are suitable as intermediates in the preparation of herbicides of the isobenzofuranone type.

L'invention concerne un procédé de préparation de composés à base d'aniline représentés par la formule (I), dans laquelle n et R sont tels que définis dans la revendication 1. Ledit procédé consiste à faire réagir des composés nitro de formule (II), où n et R sont tels que définis précédemment, avec de l'hydrazine, à température élevée et en présence d'une base aqueuse. Les composés représentés par la formule (I) peuvent servir de produits intermédiaires dans la préparation d'herbicides du type isobenzofuranone.

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