A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, category: chiral-oxygen-ligands, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. category: chiral-oxygen-ligands, Name is (2S,3S)-Butane-2,3-diol, molecular formula is C4H10O2. In a Article, authors is Aoki, Shin£¬once mentioned of category: chiral-oxygen-ligands
SIMPLE CHIRAL CROWN ETHERS COMPLEXED WITH POTASSIUM TERT-BUTOXIDE AS EFFICIENT CATALYSTS FOR ASYMMETRIC MICHAEL ADDITIONS
Simple C2-symmetric chiral crown ether 1 complexed with KOtBu was found to work as an efficient chiral catalyst in Michael additions to cause high asymmetric induction.The results with various chiral crown ethers as catalysts suggest that diaxial-like conformation of the vicinal methyl groups of 1<*>potassium enolate complex is responsible for the chiral induction.
The result showed that such a combination of chemo- and biocatalysis improved the catalytic yield more than two times compared with that of sole metal catalysis.category: chiral-oxygen-ligands. I hope my blog about 19132-06-0 is helpful to your research.
Reference£º
Synthesis and Crystal Structure of a Chiral?C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur¨Cnitrogen¨Coxygen ligand derived from aminothiourea and sodium?D-camphor-¦Â-sulfonate