Palladium-Catalyzed α-Arylation of Cyclic Vinylogous Esters for the Synthesis of γ-Arylcyclohexenones and Total Synthesis of Aromatic Podocarpane Diterpenoids
作者:Wen-Yi Hou、Yen-Ku Wu
DOI:10.1021/acs.orglett.7b00268
日期:2017.3.3
method for the formal γ-arylation of cyclohexenones allowing synthesis of a remote all-carbon quaternary center. The process involves the palladium-catalyzed α-arylation of a α-substituted cyclic vinylogous ester followed by the Stork–Danheiser transposition. The synthetic utility of this protocol is featured in the total syntheses of (±)-12-hydroxy-13-methylpodocarpa-8,11,13-trien-3-one, (±)-3β,12-di
描述了一种用于环己烯酮的形式γ-芳基化的方法,其允许合成远程全碳四元中心。该过程涉及钯催化的α-取代的环状乙烯基酯的α-芳基化,然后进行斯托克-丹海塞尔(Stork-Danheiser)换位。该协议的合成实用程序的特征是(±)-12-羟基-13-甲基罗汉松的总合成为8,11,13-trien-3-one,(±)-3β,12-二羟基-13-甲基罗汉松-8,11,13-三烯和(±)-O-甲基二氢萘醌。