Download full text in PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... Presented by J.-EN at the 190th National Meeting of the American Chemical Society Chicago, Illinois, September, 1985. ... The intramolecular Diels-Alder reaction of a (5′-hexynyl)cyclopentadiene provides a 1,2-tetramethylene-bridged norbornadiene ...