申请人:American Cyanamid Company
公开号:US06320053B1
公开(公告)日:2001-11-20
The invention relates to a process for the preparation of hetero)aryloxyheteroarylcarboxylic amide or ester of formula VI
wherein A1, A2, A3, A4, A5 Hal, X, R1, and R4 are defined within, which process comprises preparing the heteroarylcarboxylic amide or ester of formula I or a salt thereof,
from a trichoromethyl-heteroaromatic compound of formula II
and reacting the compound of formula I with an aromatic or heteroaromatic hydroxyl compound of formula VII,
R4—OH VII
optionally in the presence of a base.
本发明涉及一种制备异(杂)芳氧基杂芳基羧酰胺或酯的方法,其化学式为VI,其中A1、A2、A3、A4、A5、Hal、X、R1和R4在定义中,该方法包括从化学式II的三氯甲基-杂芳化合物制备化学式I或其盐的杂芳基羧酰胺或酯,然后将化学式I的化合物与化学式VII的芳香或杂芳羟基化合物(R4-OH)反应,可选地在碱的存在下进行。