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. ... Cuprate-mediated homoconjugate addition to activated cyclopropane 6 is shown to proceed with inversion of absolute configuration at the apical carbon of the cyclopropane. ... 6: TLC R f (20:80 EtOAc/hexane) = 0.15, IR: 2905, 1730, 1705, 1410, 1280, 1235, 1175, 1010 cm ...