JAMES M. RENGA,NATALIE C. GIAMPIETRO,GREGORY T. WHITEKER,PETER LEE JOHNSON,CHRISTOPHER GALLIFORD
申请号：
MX2015007527
公开号：
MX2015007527A
申请日:
2013.12.12
申请国别(地区):
MX
年份:
2015
代理人:
摘要：
4-Amino-3-chloro-6-(substituted)picolinates are prepared from difluoroacetic acid or trifluoroacetic acid, tritylamine or t-butylamine as a protecting group, a 3,3-dialkoxyprop-1-yne and a substituted methylene amine by a series of steps. Provided herein are processes for the preparation of 4-amino-5-fluoro-3-halo-6-(substituted)picolinates and 4-amino-3-halo-6-(substituted)picolinates. More particularly, provided herein are processes for the preparation of 4-amino-5-fluoro-3-halo-6-(substituted)picolinates and 4-amino-3-halo-6- (substituted)picolinates from a non-pyridine source. These picolinates are useful as herbicides.Se prepara 4-amino-3-cloro-6-picolinato (substituido) del ácido diflúor acético o del ácido triflúor acético, tritilamina o t-butilamina como un grupo protector, una 3,3-dialcoxiprop-1-ina y una metilen amina substituida por una serie de pasos.
