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 insertion of vinylidene carbenes into CH bonds is an efficient method for the synthesis of 2,5-dihydrofurans. The methodology provides a convenient entry to the core structure of squalestatin/zaragozic acid natural products. ... The formation of 2,5-dihydrofurans via ...