Polymer supported vanadium complexes (denoted as c-PMA (n) -V) were prepared by the complexation of vanadium ions onto a cross linked polyacrylate. c PMA (n) -V can catalyze the oxidative cleavage of olefins with a large excess of t-butyl hydroperoxide (TBHP) or bishydroxylation of olefins with 4 eq. of TBHP.