Complementary Photocatalytic Toolbox: Control of Intramolecular endo- versus exo-trig Cyclizations of α-Phenyl Olefins to Oxaheterocyclic Products
作者:Hans-Achim Wagenknecht、Fabian Weick、Desirée Steuernagel、Arina Belov
DOI:10.1055/s-0040-1719871
日期:2022.7
choice of the organic chromophore as the photocatalyst. The central photoredox catalytic reaction in both cases is a nucleophilic addition of the hydroxy function to the olefin function of the substrates. N,N-(4-Diisobutylaminophenyl)phenothiazine catalyzes exo-trig cyclizations, whereas 1,7-dicyanoperylene-3,4,9,10-tetracarboxylic acid bisimides catalyze endo-trig additions to products with anti-Markovnikov
双功能α-苯基烯烃分子内环化的区域选择性可以简单地通过选择有机发色团作为光催化剂来控制。在这两种情况下,中心光氧化还原催化反应是羟基官能团与底物烯烃官能团的亲核加成。N , N -(4-二异丁基氨基苯基)吩噻嗪催化exo -trig 环化,而 1,7-二氰基苝-3,4,9,10-四羧酸双酰亚胺催化endo-trig 添加到具有抗马尔科夫尼科夫区域选择性的产品中。我们初步报告了 11 种代表性底物的光氧化还原催化转化为 20 个氧杂环,以证明此光氧化还原催化工具箱中这两种变体的相似性和互补性。