Polymere kryptanden, 1

The synthesis of a vinyl group containing cryptand, 18‐vinyl‐5,6‐benzo‐4,7,13,16,21,24‐hexaoxa‐1,10‐diazabicyclo[8.8.8]hexacos‐2‐ene (8), was developed. Gel type copolymers with different polarities of the matrix were obtained from 8 and styrene or 8 and 1‐vinyl‐2‐pyrrolidone, crosslinked with 1,4‐divinylbenzene. A copolymer with 4,4'‐divinylbiphenyl as crosslinking agent was prepared in a macroporous form. The ability of the different copolymers to form complexes with the alkali metal cations as well as the selectivity of the copolymers towards these cations were investigated.