Patent ID: 8252938
Filing Date: 2012-08-28
Classification: C07D

Abstract:
1. A process for the preparation of a 6-(aryl)-4-aminopicolinate of the formula wherein Q represents Cl or Br; R represents C W represents H, F or Cl; X represents H, F, C Y represents halogen; and Z represents H or F; which comprises heating a 3-halo-6-(aryl)-4-iminotetrahydropicolinic acid ester of Formula (I) wherein R represents C R R Q represents Cl or Br; and W represents H, F or Cl; X represents H, F, C Y represents halogen; and Z represents H or F; at a temperature from about 25° C. to about 150° C. in the presence of a polar solvent and recovering the product.