Stereoselective Control of the Cu Activation of β,β-Diboryl Acrylates for Allylic Coupling Protocols with Concomitant Lactonization
作者:Mireia Pujol、María Méndez、Elena Fernández
DOI:10.1021/acs.orglett.3c03640
日期:2024.4.12
discriminate between two geminal boryl moieties that are exposed to the same reaction conditions. Here we describe a stereoselective C–B activation of β,β-diboryl acrylates forming exclusively the (Z)-α-borylalkenyl copper(I) key intermediate, for subsequent allylic alkylation reactions. The new borylated (Z)-skipped dienoates followed a feasible iodo-lactonization sequence for the preparation of borylated
成功 C-B 活化的关键是区分暴露于相同反应条件的两个偕硼基部分。在这里,我们描述了β,β-二硼基丙烯酸酯的立体选择性C-B活化,仅形成( Z )-α-硼基烯基铜(I)关键中间体,用于随后的烯丙基烷基化反应。新的硼酸化( Z )-跳过的二烯酸酯遵循可行的碘内酯化顺序来制备硼酸化内酯核心,其可用于药物发现。
The seriatim Cu(I) activation of 1,1,1′,1′-tetrapinacolborylethane to prospective ring closing
作者:Sara González、Dario Del Carratore、Ricardo J. Maza、Elena Fernández