Download 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. ... A series of intramolecular alkylidene insertion reactions have been investigated. The nature of the substituents is demonstrated to have a dramatic effect on the outcome. In one example a novel rearrangement is observed. ... The nature of the substituents is demonstrated to have a dramatic effect ...