METHOD FOR PRODUCING 7-(PYRAZOLE-3-YL) BENZOXAZOLES AND THEIR INTERMEDIATES AND HERBICIDE COMPOSITIONS CONTAINING THESE COMPOUNDS

摘要

A process for preparing 7-(pyrazol-3-yl)benzoxazoles of the formula I in which the variables R¹-R⁶ are as defined in claim 1 , which process is characterized in that a 2-halo-3-(pyrazol-3-yl)anilide of the formula II, in which X is bromine or iodine is reacted with a base in the presence of a transition metal compound of subgroup VIIa, VIIIa or Ib of the Periodic Table of the Elements, is disclosed.