The first synthesis of tetra- and penta-substituted pyrroles via a 1,3
-dipolar cycloaddition of alkynes to polymer bound munchnones is repor
ted. These munchnones are generated in a single step from a four compo
nent condensation product of an aldehyde, an amine, a carboxylic acid
and an isocyanide. The process produces pyrroles in good overall yield
and high purity. (C) 1996 Elsevier Science Ltd