| abstract |
Compounds of the formula (I) in the form of a mixture of predominantly one diastereomer or in the form of pure diastereomers,n nZ 1 -Q-P*R 0 R 1 (I),n nwherein:n Z 1 is a C-bonded, secondary phosphine group of the formula —P(R) 2 ,n wherein R is a hydrocarbon radical or O-atom(s)-containing heterohydrocarbon radical having 1 to 18 carbon atoms and optionally substituted by C 1 -C 6 -alkyl, trifluoromethyl, C 1 -C 6 -alkoxy, trifluoromethoxy, (C 1 -C 4 -alkyl) 2 amino, (C 6 H 5 ) 3 Si, (C 1 -C 12 -alkyl) 3 Si or halogen; n Q is selected from the group consisting of:n (i) an optionally substituted achiral aromatic group, wherein the achiral aromatic group is bonded directly to Z 1 through a carbon atom of the achiral aromatic group and bonded directly to P*R 0 R 1 through a carbon atom of the achiral aromatic group, and (ii) an optionally substituted C 1 -C 4 -alkylene group; n P* is a chiral phosphorus atom; R 0 is methyl; and R 1 is a C-bonded optically enriched or optically pure chiral, mono- or polycyclic, nonaromatic hydrocarbon ring;n nand preparation and use. |