PROCESS FOR THE PREPARATION OF 4-AMINO-5-FLUORO-3-CHLORO-6-(SUBSTITUTED)PICOLINATES
申请人:Giampietro Natalie C.
公开号:US20140171650A1
公开(公告)日:2014-06-19
4-Amino-5-fluoro-3-chloro-6-(substituted)picolinates are prepared from trifluoroacetic acid, p-methoxyaniline, a C
1
-C
4
alkyl propiolate and a substituted methylene amine by a series of steps.
4-氨基-5-氟-3-氯-6-(取代基)吡啶甲酸盐是通过三氟乙酸、对甲氧基苯胺、一种C1-C4烷基丙炔酸酯和一种取代基亚甲基胺经过一系列步骤制备的。