Process for the preparation of 4-amino-5-fluoro-3-chloro-6-(substituted)picolinates
申请人:Renga James M.
公开号:US09212141B2
公开(公告)日:2015-12-15
4-Amino-5-fluoro-3-chloro-6-(substituted)picolinates are prepared from trifluoroacetic acid, p-methoxyaniline, a 3,3-dialkoxyprop-1-yne and a substituted methylene amine by a series of steps.