In Situ Vinylpyrrole Synthesis. Diels-Alder Reactions with Maleimides to Give Tetrahydroindoles

Noland, W. E.; Lanzatella, N. P.; Sizova, E. P.; Venkatraman, L.; Afanasyev, O. V. J. Heterocycl. Chem. 2009, 46, 503.