| abstract |
SOLUTION: Expression (1) (Wherein R 1 and R 2 are a hydrogen atom, a C1-10 alkyl group, a C1-10 alkoxy group, a C2-10 alkenyl group, a di (C1-5 alkyl) amino group, a 5-8 membered A cyclic amino group, a 5- to 8-membered alicyclic group, an aryl group, an aralkyl group, a heterocyclic group, a tri-substituted silyl group or a halogen atom; and R 3 , R 4 , R 5 and R 6 are a hydrogen atom , alkyl group of C1-5, alkoxy groups of C1-5, di (C1-5 alkyl) amino group, cyclic amino group, or a halogen atom 5-8 membered; R 7 is an alkyl group of C1-5, C1 5 to 5 alkoxy groups, di (C1-5 alkyl) amino groups, 5- to 8-membered cyclic amino groups or halogen atoms.) And transition metal phosphine complexes having the compounds as ligands A catalyst for asymmetric synthesis comprising: The novel phosphine compound is particularly useful as a ligand of a transition metal complex. Further, the transition metal phosphine complex is useful as a catalyst for an asymmetric synthesis reaction. [Selection diagram] None |