Home Publications Tummatorn, J.; Ruchirawat, S.; Ploypradith, P. A Convergent General Strategy for the Functionalized 2-Aryl Cycloalkyl-fused Chromans: Intramolecular Hetero Diels—Alder (HDA) Reactions of ortho-Quinone Methides (o-QMs). Chem. Eur. J. 2010, 16, 1445–1448.