PROCESS FOR PREPARING CHEMICAL COMPOUNDS OF INTEREST BY NUCLEOPHILIC AROMATIC SUBSTITUTION OF AROMATIC CARBOXYLIC ACID DERIVATIVES SUPPORTING AT LEAST ONE ELECTRO-ATTRACTIVE GROUP
申请人:Mortier Jacques
公开号:US20120330056A1
公开(公告)日:2012-12-27
A method for preparing aromatic carboxylic acid derivatives by nucleophilic aromatic substitution, involves reacting an aromatic carboxylic acid derivative supporting only one carboxyl function, or one of the salts thereof, the carboxylic acid derivative supporting, orthogonally to the carboxyl function, a leaving group which is a fluorine or chlorine atom or an alkoxy group, chiral or otherwise and, in the latter case, preferably a methoxy group; the carboxylic acid derivative being substituted by at least one electro-attractive group other than the leaving group, preferably by a fluorine atom, with a MNu reagent, wherein M is a metal and Nu an optionally chiral nucleophile, the nucleophilic aromatic substitution reaction being carried out without a catalyst and without a step of protecting/unprotecting the acid function of the initial compound, the method being selective in that the reaction leads to the formation of ketone derivatives in a very minority fashion during the reaction.
一种制备芳香羧酸衍生物的方法,涉及将仅支持一个羧基功能或其盐之一的芳香羧酸衍生物,或者支持离去基(离去基是氟或氯原子或烷氧基,手性或非手性,在后一种情况下,最好是甲氧基)的芳香羧酸衍生物与至少一个电子亲和基团(不是离去基)进行取代,优选为氟原子,使用MNu试剂进行亲核芳香取代反应,其中M是金属,Nu是可选的手性亲核试剂,反应无需催化剂和保护/去保护初始化合物的酸性功能步骤,该方法具有选择性,反应过程中产生酮衍生物的比例非常小。