The present invention relates to cinchona-based bifunctional organocatalysts and methods for preparing chiral hemiesters using the same. More specifically, the present invention relates to methods for preparing chiral hemiesters from prochiral or meso cyclic acid anhydrides via desymmetrization, using birunctional cinchona alkaloid catalysts comprising sulfonamide functional groups.
本发明涉及基于
金鸡纳碱的双功能有机催化剂以及利用其制备手性半酯的方法。更具体地,本发明涉及利用含有磺酰胺功能基团的双功能
金鸡纳碱生催化剂,通过非对称化从原消旋或中性
环酸酐制备手性半酯的方法。