The synthesis of nitrogen containing heterocycles is of particular interest in the pharmaceutical industry due to
the range of biological activities exhibited by such compounds. Their synthesis
using multicomponent reactions saves steps and minimizes waste generation. The
bismuth (III) chloride multicomponent synthesis of a series of
hexahydroimidazo[1, 2-a]pyridines is reported. Bismuth (III)
compounds are especially attractive from a green chemistry perspective because
they are remarkably nontoxic, non-corrosive and relatively inexpensive. The reported method avoids chromatography and an
aqueous waste stream to afford the products in a very mass efficient manner.
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