Reactions of Chloroethynylphosphonates with 2-Aminoquinoline and 1-Aminoisoquinoline

The reactions of chloroethynylphosphonates with 2-aminoquinoline and 1-aminoisoquinoline proceeded chemo- and regioselectively to form novel fused tricyclic compounds with pharmacophore groups, namely dialkyl-(imidazo[1,2-a]quinolin-2-yl)- and (imidazo[2,1-a]isoquinolin-2-yl)phosphonates in high yield.