A process for the preparation of derivatives piridiloxifenoxicrotonico acid.

摘要

Preparation method of piridiloxifenoxicrotonico acid Esters of formula (i), where W can be cn or coor2, R2 is Hydrogen, Methyl or Ethyl.They REACT in an organic Solvent equimoleculares quantities of 4 - (2 - 3.5 - dicloropiridin - phenol iloxi) of formula (ii) and a alquenoico replaced acid derivative of formula (iii), where z is Chlorine or Bromine, at temperatures of 20 to 100 GC and at Atmospheric Pressure. The reaction is carried out in the presence of a base such as hydroxides.Optionally, The Salt of the compound is obtained by treating the product obtained with a solution of a metal Salt or Alkaline earth or by cation Exchange. To