eta(5)-C(5)(CH(3))(5)) with a suitably-designed PN ligand (PN = chelating tertiary phosphine-protic amine ligand) has been developed for a regioselective lactonization of unsymmetrically substituted 1,4-diols, which may provide an expeditious access to a variety of lactone lignans.
基于Cp * Ru的双功能催化剂体系(Cp * = eta(5)-C(5)(CH(3))(5)),具有适当设计的
PN配体(
PN =螯合叔膦-质子胺
配体)已经开发出用于不对称取代的1,4
-二醇的区域选择性内酯化的方法,其可以提供对各种内酯
木脂素的快速获得。