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. ... Intramolecular [2+2] cycloaddition of vinylketene 2 or ketene 6 to an olefin yielded the angular annulated triquinane precursors 4 or 7. The rate enhancement by DMAP in this process was demonstrated. ... A short synthesis of triquinane derivative 10 is described.
