chiral ligand based on an ethylenediamine backbone was developed to achieve Pd-catalyzed enantioselective C(sp3)-H arylation of cyclopropanecarboxylic and 2-aminoisobutyric acids without using exogenous directing groups. This new chiral catalyst affords new disconnection for preparing diverse chiral carboxylic acids from simple starting materials that are complementary to the various ring forming approaches
开发了一种基于
乙二胺骨架的单保护
氨基
乙胺手性
配体,以实现 Pd 催化的
环丙烷羧酸和 2-
氨基
异丁酸的对映选择性 C(sp3)-H 芳基化,而无需使用外源性导向基团。这种新的手性催化剂为从与各种成环方法互补的简单起始材料制备各种手性
羧酸提供了新的断开连接。