Chiral phospholanes via chiral 1,4-diol cyclic sulfates

A chiral ligand of formulae II, IIIc, IVc, or VIc:

• ##STR17## wherein:
• R is a radical comprising alkyl, fluoroalkyl or perfluoroalkyl, each containing up to about 8 carbon atoms;
• aryl;
• substituted aryl;
• aralkyl;
• ring-substituted aralkyl;
• --CR'.sub.2 (CR'.sub.2)qX(CR'.sub.2).sub.p R';
• q and p are each integers, the same or different, ranging from 1 to about 8;
• X is as defined below;
• and
• R' is H;
• F;
• aryl;
• or alkyl, fluoroalkyl or perfluoroalkyl, each containing up to about 8 carbon atoms;
• X is O, S, NR", PR", divalent aryl, divalent fused aryl;
• R" is hydrogen;
• alkyl, fluoroalkyl or perfluoroalkyl, each containing up to about 8 carbon atoms;
• aryl;
• substituted aryl;
• aralkyl;
• ring substituted aralkyl;
• or CR'.sub.2 (CR'.sub.2)qZ(CR'.sub.2).sub.p R';
• Z is O, S, NR', or PR';
• and
• R', p, and q are as defined above;
• and
• each Y is independently hydrogen, halogen, alkyl, alkoxy, aryl, aryloxy, nitro, amino, vinyl, substituted vinyl, alkynyl or sulfonic acid, and n is an integer from 1 to 6 equal to the number of unsubstituted aromatic ring carbons.