PROCESSES FOR THE PREPARATION OF 4-AMINO-3-HALO-6- (SUBSTITUTED)PICOLINATES AND 4-AMINO-5-FLUORO-3-HALO-6- (SUBSTITUTED)PICOLINATES
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.
申请公布号
WO2014093591(A1)
申请公布日期
2014.06.19
申请号
WO2013US74604
申请日期
2013.12.12
申请人
DOW AGROSCIENCES LLC;JOHNSON, PETER LEE;RENGA, JAMES M.;GIAMPIETRO, NATALIE C.;WHITEKER, GREGORY T.;GALLIFORD, CHRISTOPHER
发明人
JOHNSON, PETER LEE;RENGA, JAMES M.;GIAMPIETRO, NATALIE C.;WHITEKER, GREGORY T.;GALLIFORD, CHRISTOPHER