CHIRAL DIPHOSPHINES, METHODS FOR THEIR PREPARATION, TRANSITION METAL COMPLEXES COMPRISING THEM AND USE IN CHIRAL SYNTHESIS

摘要

The present invention provides P-chiral compounds of general formulae (II) and (III): in formula (II) at least one of R21, R25, R26 and R30 is independently selected from CM alkyl, CF3, C1 -4 alkoxy, phenyl and benzyloxy and the remaining substituents selected from R21, R25. R26 and R30 are hydrogen; at least one of R22, R24, R27 and R29 are independently selected from C1-14 alkyl, CF3, C1-14 alkoxy, phenyl and benzyloxy and the remaining substituents selected, from R22, R24, R27 and R29 are hydrogen; and R23 and R28 are independently selected from hydrogen, CM alkyl, CF3, , C1-14 alkoxy, phenyl and benzyloxy;. in formula (III) at least one of R21, R25, R26 and R30 is independently selected from phenyl and benzyloxy and the remaining substituents selected from R21, R25, R-26 and R30 are hydrogen; and R22, R-23 R24, R27, R28 and R29 are independently selected from hydrogen, C1-14 alkyl, CF3, C1-14 alkoxy, phenyl and benzyloxy.