Efficient and versatile single pot approach to dipyrromethanes and bis(heterocyclyl)methanes

Article abstract of DOI:10.1016/j.tet.2005.04.029

An efficient single pot route is presented involving the use of O, N-perhydro 1,3-heterocycles as carbonyl equivalents for the synthesis of 5-substituted dipyrromethanes, 5,10-disubstituted tripyrranes and bis(heterocyclyl)methanes.