Copper protection in the palladium catalyzed regioselective allylation of a model polyketide: Methyl 3,5-dioxohexanoate
作者:Jorge Marquet、Marcial Moreno-Mañas、María Prat
DOI:10.1016/s0040-4039(00)99414-0
日期:——
allylation of the model polyketide system methyl 3,5-dioxohexanoate at the C-2 position can be accomplished even with secondary and tertiary radicals by palladium catalyzed allylation of its copper(II) complex, 1a. Initial results indicate that the cobalt(II) complex, 1b, can be also useful. Cyclizations of the resulting diketoesters, 3, afford triaceticacidlactone derivatives, 5, regioselectively allylated