OPPENHEIMER JOSSIAN,EMONDS MARK V.M.,DERSTINE CHRISTOPHER W.,CLOUSE ROBERT C.
申请号：
NZ62719212
公开号：
NZ627192A
申请日:
2012.12.28
申请国别(地区):
NZ
年份:
2015
代理人:
摘要：
The disclosure relates to a method of producing methyl 4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxy-phenyl)pyridine-2-carboxy late, comprising: adding methyl isobutyl ketone to an aqueous solution comprising 4-chloro-2-fluoro-3-methoxy-phenylboronic acid to form an organic phase comprising the 4-chloro-2-fluoro-3-methoxy-phenylboronic acid and an aqueous phase； separating the organic phase comprising the 4-chloro-2-fluoro-3-methoxyphenylboronic acid from the aqueous phase； reacting the 4-chloro-2-fluoro-3-methoxyphenylboronic acid with methyl 4-(acetylamino)-3,6-dichloropyridine-2-carboxylate in methyl isobutyl ketone in the presence of a palladium catalyst and a ligand to produce methyl 4-(acetylamino)-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylate； and deacetylating the methyl 4-(acetylamino)-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylate to produce methy14-amino-3-chloro-6-(4-chloro-2-fluoro-3 -methoxypheny l)pyridine-2-carboxylate.
