Preparation and reactivity of a non-styrenic polymer-supported organotin chloride catalyst

A new type of macroporous polymer-supported organotin hydride has been prep ared by suspension copolymerisation of an allyl ether monomer bearing an or ganotin moiety with N-phenylmaleimide and 1,1'-(methylenedi-4,1-phenylene)b ismaleimide. Several resins were synthesised using different ratios of tolu ene-N-methylformanilide as the porogen. The swelling characteristics of the resins indifferent solvents and their specific surface areas were estimate d. The organotin chloride-functionalised beads obtained showed good activit y and good stability to reduction of bromoadamantane by sodium borohydride. Tin leaching during successive reuses was estimated.