[EN] EFFICIENT PROCESS FOR MAKING 6-CARBOXY BENZOXAZOLE DERIVATIVES<br/>[FR] PROCÉDÉ EFFICACE DE FABRICATION DE DÉRIVÉS DE 6-CARBOXY BENZOXAZOLE
申请人:PFIZER IRELAND PHARMACEUTICALS
公开号:WO2021124158A1
公开(公告)日:2021-06-24
The present invention is directed to an efficient process for preparing benzoxazole derivatives comprising the step of reacting a 4-Amino-3-hydroxybenzoic acid compound of Formula III with a 3,5-Dichlorophenyl ortho ester compound of Formula II to provide the compound of Formula I wherein R1, R2a, R2b and R2c are as described herein.
本发明涉及一种高效的制备苯并噁唑衍生物的方法,包括将式III的4-氨基-3-羟基苯甲酸化合物与式II的3,5-二氯苯基邻酯化合物反应,以提供式I的化合物,其中R1、R2a、R2b和R2c如本文所述。