JOHNSON, PETER LEE,RENGA, JAMES M.,GIAMPIETRO, NATALIE C.,WHITEKER, GREGORY T.,GALLIFORD, CHRISTOPHER
申请号：
EP13861884
公开号：
EP2931044A4
申请日:
2013.12.12
申请国别(地区):
EP
年份:
2016
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.
