Binaphthol monophosphoric acid derivative and its use

摘要

A binaphthol monophosphoric acid derivative of the following formula (1), (2), (3) or (4): wherein each of R1, R2, R3 and R4 which are independent of one another, is hydrogen, a C1-20 linear or branched alkyl group, a C1-20 linear or branched alkenyl group, a C1-20 linear or branched alkynyl group, a phenyl group, a phenyl group having its nucleus substituted at the 1- to 4-carbon atom by a C1-10 linear or branched alkyl group, a phenyl group having its nucleus substituted at the 1- to 4-carbon atom by a C1-10 linear or branched alkenyl group, a phenyl group having its nucleus substituted at the 1-to 4-carbon atom by a C1-10 linear or branched alkynyl group, a naphthyl group or a C3-8 cycloalkyl group, provided that R1 to R4 are not simultaneously hydrogen, wherein each of R5, R6, R7 and R8 which are independent of one another, is hydrogen, a C1-20 linear or branched alkyl group, a C1-20 linear or branched alkenyl group, a C1-20 linear or branched alkynyl group, a phenyl group, a phenyl group having its nucleus substituted at the 1- to 4-carbon atom by a C1-10 linear or branched alkyl group, a phenyl group having its nucleus substituted at the 1- to 4-carbon atom by a C1-10 linear or branched alkenyl group, a phenyl group having its nucleus substituted at the 1-to 4-carbon atom by a C1-10 linear or branched alkynyl group, a naphthyl group or a C3-8 cycloalkyl group.