Asymmetric desymmetrization of meso-tetrahydrofuran derivatives by highly enantiotopic selective C-H oxidation
作者:Akio Miyafuji、Tsutomu Katsuki
DOI:10.1016/s0040-4020(98)00489-x
日期:1998.8
Asymmetric desymmetrization of meso-tetrahydrofuran derivatives was successfully achieved by Mn-salencatalyzed enantiotopic selective C-H oxidation, giving optically active lactols (up to 90% ee) which serve as useful chiral building blocks for organic synthesis.
Oxidative desymmetrization of meso-cyclic ethers (2): Recognition of the core structure of substrates of the Mn(salen) catalyst
作者:H SUEMATSU、Y TAMURA、H SHITAMA、T KATSUKI
DOI:10.1016/s0385-5414(07)00063-9
日期:2007.12.1
Mn(salen) complexes bearing a binaphthyl chiral unit serve as catalysts for oxidative desymmetrization of meso-cyclic ethers. This study revealed that chiral recognition by the complex is strongly influenced by the core structure of substrates and this recognition is adjusted by an appropriate modification of the binaphthyl unit.