Decarboxylative Alkynylation and Cyanation of Carboxylic Acids using Photoredox Catalysis and Hypervalent Iodine Reagents
作者:Franck Le Vaillant、Jérôme Waser
DOI:10.2533/chimia.2017.226
日期:——
in material and medicinal sciences. A convenient and straightforward access to both classes of compounds under mild conditions is, therefore, highly desirable. Herein, we disclose the decarboxylative alkynylation and cyanation of broadly available carboxylic acids using photoredox catalysis and hypervalent iodine reagents. Choices of both catalysts and reagents were crucial. Computational and experimental
炔烃和腈是重要的官能团,可作为有机合成中的通用构建基块,并在材料和药物科学中得到应用。因此,非常需要在温和条件下方便且直接地获得两类化合物。在此,我们公开了使用光氧化还原催化和高价碘试剂对广泛可用的羧酸进行脱羧炔基化和氰化反应。催化剂和试剂的选择至关重要。计算和实验研究揭示了由试剂的氧化电位决定的两种不同的可能机理:自由基用于炔基化,离子用于氰化。