An efficient method for solid-phase synthesis of pyrroles is described
. Polystyrene Rink amide resin is acetoacetylated and converted into p
olymer bound enaminones upon treatment with primary amines. These then
undergo a Hantzsch reaction with alpha-bromoketones to yield pyrroles
. After cleavage with 20% trifluoroacetic acid in dichioromethane pyrr
ole-3-carboxamides are obtained in excellent purity. (C) 1998 Elsevier
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