A one-pot multicomponent synthesis of phenanthridine and acridine
derivatives is described. This method includes the in situ generation
of furo[3,4-c]isoquinoline
and furo[3,4-b]quinoline intermediates
by the coupling of heteroaromatic o-alkynyl
carbonyl derivatives with Fischer carbene complexes and subsequent
trapping of these intermediates by suitable dienophiles.
azaisobenzofuran - heterocycles - Diels-Alder
reaction - chromium - carbene complexes