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. ... Free radical initiated ring expansion of twelve-, thirtheen-, and fourteen-membered carbocyclic rings is described together with a new synthesis of (R)-(−)-muscone. ... A free radical-based synthesis of large rings including (R)-(−)-muscone is reported. ... (a) This substance had ...