PROCESSES FOR THE PREPARATION OF 4-AMINO-3-HALO-6- (SUBSTITUTED)PICOLINATES AND 4-AMINO-5-FLUORO-3-HALO-6- (SUBSTITUTED)PICOLINATES

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专利权人:

发明人:

申请号：

EP13861884.8

公开号：

EP2931044B1

申请日:

2013.12.12

申请国别(地区):

EP

年份:

2017

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.

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