RHODIUM(I)-CATALYZED ASYMMETRIC HYDROBORATION OF ALKENES WITH 1,3,2-BENZODIOXABOROLE

Article abstract of DOI:10.1016/S0040-4039(00)94379-X

Several rhodium(I) complexes containing chiral phosphine, (+)DIOP, (+)BINAP, (S,S) CHIRAPHOS, and (S)(R)BPPFA, have been found to be effective as catalyst for the asymmetric hydroboration of prochiral alkenes with catecholborane (1,3,2-benzodioxaborole) to give optically active 2-alkyl-1,3,2-benzodioxaboroles. among the ligands examined, DIOP has been recognized to be most effective to give high asymmetric induction.