PROCESS FOR THE PREPARATION OF 4-AMINO-5-FLUORO-3-HALO-6-(SUBSTITUTED)PICOLINATES
申请人:Zhu Yuanming
公开号:US20120190859A1
公开(公告)日:2012-07-26
4-Amino-5-fluoro-3-halo-6-(substituted)picolinates are conveniently prepared from 4,5,6-trichloropicolinonitrile by a series of steps involving fluorine exchange, amination, halogen exchange, halogenation, nitrile hydrolysis, esterification, and transition metal assisted coupling.
4-氨基-5-氟-3-卤代-6-(取代基)吡啶酸酯可以通过一系列步骤方便地从4,5,6-三氯吡啶腈制备,其中包括氟交换、胺化、卤素交换、卤代反应、腈水解、酯化和过渡金属辅助偶联。