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. ... The thermal [2+2] dimerization of methylenecyclopropanes, including methylenecyclopropane itself, is discussed. The effects of structural features on the ability of this reaction to occur are discussed in terms of the probable mechanism. ... Participant in NSF-URP program at ...