Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. 135861-56-2, Name is (1R)-1-((4R,4aR,8aS)-2,6-Bis(3,4-dimethylphenyl)tetrahydro-[1,3]dioxino[5,4-d][1,3]dioxin-4-yl)ethane-1,2-diol, molecular formula is C24H30O6, belongs to chiral-nitrogen-ligands compound. In a document, author is Maximuck, William J., introduce the new discover, SDS of cas: 135861-56-2.
Lipophilic chiral cobalt (III) complexes of hexaamine ligands: Efficacies as enantioselective hydrogen bond donor catalysts
Four known chiral enantiopure octahedral cobalt(III) trichloride salts with aliphatic hexaamine ligands are converted to new CH2Cl2 soluble tris(tetraarylborate) or 3BArf- salts (BArr = B(3,5-C6H3(CF3)(2))(4) in biphasic reactions. These include sepulchrate and sarcophagine complexes in which the hexaamine ligands are bicyclic (Z (CH2NHCH2CH2NHCH2)(3)Z, Z =N, CX), as well as a truncated sarcophagine in which a missing carbon vertex renders the ligand acyclic and tripodal, with three terminal NH2 groups that define a trigonal C-3 symmetric face (CH3C(CH2NHCH2CH2NH2)(3)). In the presence of tertiary amine bases, these are effective catalysts for two Michael type carbon-carbon bond forming reactions and a related carbon-nitrogen bond forming reaction. However, only the last complex affords significant enantioselectivities (30-57% ee). Rationales, and directions for future catalyst optimization, are proposed.
Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law. In my other articles, you can also check out more blogs about 135861-56-2. SDS of cas: 135861-56-2.
Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis¡ªI. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
,Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis