| abstract |
(57) [Problem] To provide a novel phosphine compound having excellent performance (chemoselectivity, enantioselectivity, catalytic activity) as a catalyst for asymmetric synthesis reaction, particularly asymmetric hydrogenation reaction. Means: The following general formula (In the formula, R 1 is a hydrogen atom or a linear or branched alkyl group having 1 to 4 carbon atoms, R 2 , R 3 , R 4 , and R 5 are the same or different, and each represents a hydrogen atom, 1-6 carbon atoms Alkyl group, an alkoxy group having 1 to 6 carbon atoms, R 2 And R 3 , R 3 and R 4 , and R 4 and R 5 may be bonded together to form a ring which may contain an oxygen atom. R 6 and R 7 Are the same or different, and each is a linear or branched alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 3 to 7 carbon atoms, a perfluoroalkyl group, a phenyl group, A phenyl group having a substituent (an alkyl group having 1 to 6 carbon atoms, a halogen-substituted alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, or a halogen atom); And 12 aralkyl groups or ring-substituted aralkyl groups. ) |