Method for producing 7-(pyrazole-3-yl) benzoxazoles

Details Method for producing 7-(pyrazole-3-yl) benzoxazoles Method for producing 7-(pyrazole-3-yl) benzoxazoles

C - Chemistry, Metallurgy

07

D

C07D 413/14 (2006.01) A01N 43/56 (2006.01) A01N 43/76 (2006.01) C07D 231/16 (2006.01) C07D 231/18 (2006.01) C07D 413/04 (2006.01) C07D 413/10 (2006.01)

Patent

CA 2402938

The invention relates to a method for producing 7-(pyrazole-3-yl) benzoxazoles of the general formula (I), wherein the variables R1 - R6 have the meanings given in claim 1. The inventive method is characterized by reacting a 2- halogen-3-(pyrazole-3-yl) anilide of the general formula (II), in which X represents bromine or iodine, with a base in the presence of a transition metal compound of subgroups VIIa, VIIIa or Ib of the periodic system.

L'invention concerne un procédé pour la production de 7-(pyrazol-3-yl)benzoxazoles de formule générale (I) dans laquelle les variables R?1¿ à R?6¿ ont les significations indiquées dans la revendication (1). Le procédé selon l'invention est caractérisé en ce qu'on fait réagir un 2-halogène-3-(pyrazol-3-yl)anilide de formule générale (II), dans laquelle X représente brome ou iode, avec une base en présence d'un composé de métal de transition des sous-groupes VIIa, VIIIa ou Ib de la classification périodique des éléments.

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