Process for the preparation of [(5,6-dicarboxy-3-pyridyl) methyl]
申请人:American Cyanamid Company
公开号:US06002012A1
公开(公告)日:1999-12-14
There is provided a process for the preparation of [(5,6-dicarboxy-3-pyridyl)methyl]ammonium halides having the structural formula I ##STR1## The [(5,6-dicarboxy-3-pyridyl)methyl]ammonium halides are useful as intermediates in the preparation of herbicidal 5-(alkoxymethyl)-2-(2-imidazolin-2-yl)-nicotinic acids, esters and salts.