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. ... HNO 3 -catalyzed isomerization of tricyclo[5.2.1.0 2,6 ]decane affords tricyclo[4.2.2.0 1,5 ]decane - the “bottle neck” in the adamantane rearrangement. ... The isomerization reaction of tricyclo[5.2.1.0 2,6 ]decane in the nitric acid media afforded, with synthetically useful yield, ...