The three-component condensation between a 2-aminoazine, an aldehyde and an isonitrile catalyzed by scandium triflate was conducted on a solid support with any of the three reacting functional groups tethered to Rink amide resin via an appropriate bifunctional carboxylic acid. The resulting resin-bound 3-aminoimidazo[1,2-a]azines could be efficiently acylated prior to cleavage. (C) 1998 Elsevier Science Ltd. All rights reserved.