P. Vandeweghe et J. Collin, DIIODOSAMARIUM, A CATALYST PRECURSOR FOR DIELS-ALDER AND HETERO-DIELS-ALDER REACTIONS, Tetrahedron letters, 35(16), 1994, pp. 2545-2548
SmI2 presents catalytic activity for Diels-Alder reactions between cyc
lopentadiene or isoprene and various dienophiles, and for hetero Diels
-Alder reactions.