Patent ID: 8415488

Claim:
A compound of the formula (I), in the form of a mixture comprising predominantly one enantiomer, or in the form of a pure enantiomer, secondary phosphine-Q-P*(═O )HR 1 (I) wherein secondary phosphine corresponds to the formula —PR 2 R 3 , wherein R 2 and R 3 are each independently a hydrocarbon radical or an O-atom(s) containing heterohydrocarbon radical which has 1 to 18 carbon atoms and is unsubstituted or substituted by C 1 -C 6 -alkyl, trifluoro-methyl, 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; Q is a substituted or unsubstituted radical of the formulae: or linear C 1 -C 4 -alkylene, wherein the secondary phosphine group is bonded directly to a carbon atom in Q, and wherein —P*(=O)HR 1 is bonded directly to a carbon atom in Q; P* is a chiral phosphorus atom; and R 1 is a hydrocarbon radical selected from the group consisting of linear or branched C 1 -C 18 -alkyl-; unsubstituted or C 1 -C 6 -alkyl- or C 1 -C 6 -alkoxy-substituted C 5 -C 12 -cycloalkyl- or C 5 -C 12 -cycloalkyl-CH 2 —; phenyl, naphthyl, anthryl or benzyl; or halogen-, C 1 -C 6 -alkyl-, trifluoromethyl-, C 1 -C 6 -alkoxy-, trifluoromethoxy-, (C 6 H 5 ) 3 Si—, (C 1 -C 12 -alkyl) 3 Si—, and secondary amino-substituted phenyl, naphthyl or benzyl; excluding the compound of the formula A