| abstract |
Methods of making a chiral phosphorus compound of formula (X) are disclosed: n n n n n n n n n n wherein R 1 , R 2 , R 3 are chiral or achiral groups selected from the list consisting of substituted or unsubstituted straight-chain, branched-chain or cyclic aliphatic or aromatic groups and in which the pair R 1 /R 2 may be interconnected to form a ring. |