Process for the preparation of 4-amino-5-fluoro-3-halo-6-(substituted)picolinates
申请人:Whiteker Gregory T.
公开号:US08609855B2
公开(公告)日:2013-12-17
4-Amino-5-fluoro-3-halo-6-(substituted)picolinates are conveniently prepared from 4,5,6-trichloropicolinates by a series of steps involving fluorine exchange, amination, halogen exchange, halogenation and transition metal assisted coupling.
4-氨基-5-氟-3-卤代-6-(取代基)吡啶酸盐可以通过一系列步骤从4,5,6-三氯吡啶酸盐方便地制备,这些步骤涉及氟交换、氨基化、卤素交换、卤素化和过渡金属辅助偶联。