Eco-Friendly Solvents for Palladium-Catalyzed Desulfitative CH Bond Arylation of Heteroarenes
作者:Anoir Hfaiedh、Kedong Yuan、Hamed Ben Ammar、Bechir Ben Hassine、Jean-François Soulé、Henri Doucet
DOI:10.1002/cssc.201403429
日期:2015.5.22
Herein, we report the Pd‐catalyzed regioselective direct arylation of heteroarenes in which benzenesulfonyl chlorides are used as coupling partners through a desulfitative cross‐coupling that can be performed in diethyl carbonate (DEC) or cyclopentyl methyl ether (CPME) as green and renewable solvents or even in neat conditions instead of dioxane or dimethylacetamide (DMA). Under these solvent conditions
本文中,我们报道了杂芳烃在钯催化的区域选择性直接芳基化反应中的应用,其中苯磺酰氯通过脱硫交叉偶联作用作为偶联伙伴,可在碳酸二乙酯(DEC)或环戊基甲基醚(CPME)中作为绿色和可再生溶剂进行甚至在纯净的条件下代替二恶烷或二甲基乙酰胺(DMA)。在这些溶剂条件下,反应与各种各样的杂芳烃进行。C2或C5芳基化产物是由呋喃和吡咯衍生物制得的。苯并呋喃还可以在C2位置进行芳基选择性芳基化,而如果使用噻吩和苯并噻吩,则反应会在C3或C4位置选择性地进行。此外,在某些情况下,尤其是对于1-甲基吲哚,