A method for the production of 2,3 - pyridine dicarboxylic acids of 3 - (2 - imidazoline - 2 - y) picoline acids.

摘要

There is provided a process for the preparation of a 2,3- pyridinedicarboxylic acid from a 3-(2-imidazolin-2-yl)picolinic acid. The 2,3-pyridinedicarboxylic acids are useful in the preparation of herbicidal 2-(2-imidazolin-2-yl)nicotinic and quinoline-3-carboxylic acids, esters and salts.