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. ... Reductive cyclisation of allenic ketones. A new approach to functionalised five-membered rings. ... Electrolysis of a series of terminal allenic ketones, (4), (6), and (13) is shown to result in reductive cyclisation, through the -mode, producing five-membered rings, (5), (7), and ...