| 摘要 |
A chiral phosphorus-based ligand, in single enantiomer form, which is capable of complexing a transition metal atom and of acting as a ligand in asymmetric chemical catalysts, which comprises the partial structure (I): R<1>R<2>P-O-C-X-Y-C-O-PR<1>R<2> wherein each of X and Y is C or a heteroatom; the C-X-Y-C chain forms part of a linearly-fused bicyclic structure; and either R<1> and R<2> are each independently H or an organic group of up to 20 carbon atoms, including alkyl, fluoroalkyl, aryl, alkylarly, alkoxy, aryloxy and alkylaryloxy, or PR<1>R<2> is cyclic such that R<1> and R<2> are covalently linked, optionally with additional substituents. |
