ZHU YUANMING,WHITEKER GREGORY T,ARNDT KIM E,RENGA JAMES M,FROESE ROBERT D
申请号：
IN6634/DELNP/2013
公开号：
IN2013DN06634A
申请日:
2013.07.25
申请国别(地区):
IN
年份:
2015
代理人:
摘要：
4 Amino 3 chloro 5 fluoro 6 (substituted)picolinates are conveniently prepared from 3 4 5 6 tetrachloropicolinonitrile by a series of steps involving fluorine exchange amination reaction with hydrazine halogenation hydrolysis and esterification and transition metal assisted coupling.
