Studies on the Allylic Oxidation of α,β-Unsaturated 13- to 15-Membered Ring Lactones
作者:Leena Kaisalo、Jorma Koskimies、Tapio Hase
DOI:10.1055/s-1996-4345
日期:1996.9
γ-Hydroxy and γ-oxo-α,β-unsaturated 13- to 15-membered macrolides were prepared. The effect of the ring size on the allylic oxidation reaction with SeO2 is discussed.
Free radical macrocyclisation via propiolate esters.
作者:Jack E. Baldwin、Robert M. Adlington、Steve H. Ramcharitar
DOI:10.1016/0040-4020(92)85015-7
日期:1992.1
Intramolecular free-radical addition to propiolate esters has provided a new and a stereoselective route to 14–16 membered -α,β-unsaturated macrocylic lactones from their corresponding ω-iodoalkyl-propionate esters under triphenyltin hydride/AIBN mediated conditions. Attemps to synthesise analogous 10–13 membered lactones proved unsuccessful, resulting in acyclic products derived from direct reduction at the