Renga, James,Whiteker, Gregory T.,Johnson, Peter Lee,Galliford, Christopher
申请号：
NZ70868013
公开号：
NZ708680A
申请日:
2013.12.12
申请国别(地区):
NZ
年份:
2018
代理人:
摘要：
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. In particular, provided herein are processes for the preparation of 4-amino-5-fluoro-3-chloro-6-(substituted)picolinates from a non-pyridine source without a metal assisted coupling and without fluorination with an expensive fluorinating agent. These picolinates are useful as herbicides.
