Complexes of 8-hydroxyquinoline with Co or Ni acetate were prepd. and supported on conjugated polymers like polyaniline, poly-o-toluidine, or poly-o-anisidine. These heterogeneous systems were used to catalyze the oxidn of alpha-pinene, limonene, 1-decene with mol. O-2 dissolved in acetonitrile at 60 degrees C, with isobutyraldehyde as oxygen transfer agent. Epoxide products were obtained in 20-80% yields at high selectivities.