PtCl2 catalysed cascade cyclization of an enediyne-enone system to afford a tetracyclic chromenone is reported, which proceeds through two consecutive highly regioselective 6-endo-dig cyclizations in a single step with the formation of two new C-C bonds and two new rings in excellent yield. A mechanism for this transformation is proposed based on the isolated intermediates.

Environmentally benign Fe(III)-catalysed sequential condensation, cyclization and aromatization of 1,3diketone and 2-ethynylaniline derivatives to the substituted quinoline scaffolds with good to excellent yield in shorter reaction time is described.

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Environmentally benign Fe(III)‐catalyzed sequential condensation, cyclization and aromatization of 1,3‐diketone and 2‐ethynylaniline derivatives to substituted quinoline derivatives with good yields in relatively short reaction times is described.