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. ... Homoallyl radical, eg , reacts with an electron-deficient olefinic bond with a new CC bond forming and arising of a 5-hexenyl radical which further undergoes to cyclization with a cyclopentane ring ( ) annulation. ... (R = R′ = H) undergoes to further addition reaction onto and ...