Processes for the preparation of 4-amino-3-halo-6-(substituted)picolinates and 4-amino-5-fluoro-3-halo-6-(substituted)picolinates
申请人:Johnson Peter L.
公开号:US09096526B2
公开(公告)日:2015-08-04
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.
PROCESSES FOR THE PREPARATION OF 4-AMINO-3-HALO-6- (SUBSTITUTED)PICOLINATES AND 4-AMINO-5-FLUORO-3-HALO-6- (SUBSTITUTED)PICOLINATES
申请人:Dow AgroSciences LLC
公开号:EP2931044A1
公开(公告)日:2015-10-21
US9096526B2
申请人:——
公开号:US9096526B2
公开(公告)日:2015-08-04
[EN] PROCESSES FOR THE PREPARATION OF 4-AMINO-3-HALO-6- (SUBSTITUTED)PICOLINATES AND 4-AMINO-5-FLUORO-3-HALO-6- (SUBSTITUTED)PICOLINATES<br/>[FR] PROCÉDÉS POUR LA PRÉPARATION DE 4-AMINO-3-HALO-6-(SUBSTITUÉS)PICOLINATES ET DE 4-AMINO-5-FLUORO-3-HALO-6 SUBSTITUÉS-PICOLINATES
申请人:DOW AGROSCIENCES LLC
公开号:WO2014093591A1
公开(公告)日:2014-06-19
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.
PROCESSES FOR THE PREPARATION OF 4-AMINO-3-HALO-6-(SUBSTITUTED)PICOLINATES AND 4-AMINO-5-FLUORO-3-HALO-6-(SUBSTITUTED)PICOLINATES
申请人:Johnson Peter L.
公开号:US20140171654A1
公开(公告)日:2014-06-19
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.