New catalytic activity of polymer-supported quaternary onium salts. Regioselective addition reaction of oxiranes with active esters catalyzed by insoluble polystyrene- …
A new regioselective addition reaction of oxiranes 15-17 with active esters 18 and 19 was carried out to give the adducts 20a-f using quaternary onium salts on cross-linked polystyrene beads. The catalytic activity of the polystyrene beads was evalulated from rates of the reaction and yields of reaction products. In this reaction, the beads containing pendant benzyltripropyl-or benzyltributylphosphonium chlorides showed the highest catalytic ...
