A Comparative Ancillary Ligand Survey in Palladium-Catalyzed C-O Cross-Coupling of Primary and Secondary Aliphatic Alcohols
作者:Ryan S. Sawatzky、Breanna K. V. Hargreaves、Mark Stradiotto
DOI:10.1002/ejoc.201600198
日期:2016.5
palladium-catalyzed C–O cross-coupling reactions involving aliphatic alcohols and (hetero)aryl halides under analogous conditions was examined, both at room temperature and at elevated temperature (90 °C). In general, the RockPhos-based catalyst system proved superior, especially at room temperature, but catalysts based on the other ligands examined also proved effective across a range of C–O cross-couplings, in some
研究了 RockPhos、Ad-BippyPhos、JosiPhos (CyPF-tBu) 和 Mor-DalPhos 在钯催化的 C-O 交叉偶联反应中的效用,该反应涉及类似条件下的脂肪醇和(杂)芳基卤化物,均在室温下进行并且在高温 (90 °C) 下。总的来说,基于 RockPhos 的催化剂体系被证明是优越的,尤其是在室温下,但基于其他配体的催化剂也被证明在一系列 C-O 交叉偶联中是有效的,在某些情况下提供比 RockPhos 更好的催化性能。根据室温反应的范围建立了新的反应性。还展示了涉及甲磺酸芳基酯的此类交叉偶联的原理证明示例。