X=Y–ZH systems as potential 1,3-dipoles. Part 56: Cascade 1,3-azaprotio cyclotransfer–cycloaddition reactions between aldoximes and divinyl ketone: the effect of oxime E/Z isomerism on cycloaddition stereoselectivity
作者:Mark Blackwell、Peter J Dunn、Alison B Graham、Ronald Grigg、Paul Higginson、Imaad S Saba、Mark Thornton-Pett
DOI:10.1016/s0040-4020(02)00835-9
日期:2002.9
between aldoximes and divinyl ketone affords mixtures of exo and endo-isomers of substituted 1-aza-7-oxabicyclo[3.2.1]octan-4-ones, the ratio of which is dependent on the E/Z geometry of the starting oxime and its ability to isomerise under the thermal reaction conditions.
醛肟和二乙烯基酮之间的级联1,3-氮杂杂环转移(1,3-APT)-1,3-偶极环加成(1,3-DC)反应提供取代的1-氮杂-7的exo和内消旋异构体的混合物-氧杂双环[3.2.1] octan-4-ones,其比例取决于起始肟的E / Z几何形状及其在热反应条件下的异构化能力。