Facile assembly of 11 H -indolo[3,2-c]quinoline by a two-step protocol involving a regioselective 6- endo -cyclization promoted by the hendrickson reagent
An expedient approach was developed to construct the 11H-indolo[3,2-c] quinoline scaffold starting from acyclic alkyne substrates. The five- and six-membered nitrogen-containing rings in the tetracyclic skeleton were elaborated efficiently by gold(III)-ca