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专利权人:
DOW AGROSCIENCES LLC
发明人:
JAMES M. RENGA,NATALIE C. GIAMPIETRO
申请号:
MX2015007532
公开号:
MX2015007532A
申请日:
2013.12.12
申请国别(地区):
MX
年份:
2015
代理人:
摘要:
4-Amino-5-fluoro-3-chloro-6-(substituted)picolinates are prepared from trifluoroacetic acid, p-methoxyaniline, a C1-C4 alkyl propiolate 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.4-Amino-5-flúor-3-cloro-6-(sustituido) picolinato son preparados a partir de ácido trifluoroacético,p-5 metoxianilina, un C1-C4 alquil propiolato y una amina de metileno sustituida mediante una serie de pasos.
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

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