present stereoselectivesynthesis of multi-functionalized vinyl iodides. Furthermore, we have succeeded in the synthesis of a useful tetra-substituted furan, via a Sonogashira coupling of the vinyl iodide moiety. The factors to control diastereoselectivity of the iodo-aldol reactions are explained in terms of theoretical calculations. Consequently, the obtained activation free energy and reaction energy
Diethyl α-methoxy-α-alkynylmalotate derivatives of cis-enediynes were synthesized and they produced toluenebiradicals via the reaction cascade triggered by ester hydrolysis. Deuterium labeling studies suggested that the reaction involved the self quenching process by fairly fast disproportionation of toluene biradicals producing zwitterionic species.