| abstract |
(57) [Summary] [Structure] General formula [Chemical formula 1] (In the formula, R represents a phenyl group, a tolyl group, an anisyl group, or a chlorophenyl group). Optically active 2-diphenylphosphinomethyl-2'-diphenylphosphinyl- Provided are a 1,1′-binaphthalene derivative, and a method for producing an optically active substance using the above compound and a transition metal compound. [Effect] The asymmetric diphosphine of the present invention relates to the creation of a novel compound and is excellent as a ligand for asymmetric synthesis. When the above compound is used at the same time as a transition metal compound such as ruthenium or rhodium, it can exhibit extremely excellent performance as a catalyst for asymmetric hydrogenation and the like in terms of selectivity, conversion and catalytic activity. |