Catalytic activity and recyclability of new enantioselective chiral Co–salen complexes in the hydrolytic kinetic resolution of epichlorohydrine

Chiral Co(III) salen catalysts bearing PF6, BF4 or Br counterions proved to be reactive and enantioselective in the hydrolytic resolution of terminal epoxides. The catalysts could be recovered and reused several times without further treatment after reaction, showing no loss of activity and enantioselectivity.