PROCESS FOR THE PREPARATION OF 4-AMINO-3-CHLORO-5-FLUORO-6-(SUBSTITUTED) PICOLINATES
申请人:Renga James M.
公开号:US20140142317A1
公开(公告)日:2014-05-22
4-Amino-3-chloro-5-fluoro-6-(substituted)picolinates are conveniently prepared from 3,4,5,6-tetrachloropicolinonitrile by a series of steps involving fluorine exchange, amination, halogen exchange and hydrolysis, esterification and transition metal assisted coupling.
4-
氨基-3-
氯-5-
氟-6-(取代基)
吡啶酸盐可以通过一系列步骤从3,4,5,6-四
氯吡啶羧腈方便地制备,包括
氟交换、胺化、卤素交换和
水解、酯化和过渡
金属辅助偶联。