作者:Mary E. Sexton、Ami Okazaki、Zhuowen Yu、Alexis van Venrooy、Jason R. Schmink、William P. Malachowski
DOI:10.1016/j.tetlet.2019.151057
日期:2019.9
Herein, we report the selective mono-γ-arylation of 7-methoxy-4-methylcoumarin under palladium-catalyzed conditions. The Buchwald G3 pre-catalyst in conjunction with either the Xantphos or N-Xantphos ligand proves to be highly reactive, engaging aryl iodides, bromides, chlorides, and triflates to effect the desired transformation. A wide range of functionality is tolerated, including the ability to
在本文中,我们报道了在钯催化条件下7-甲氧基-4-甲基香豆素的选择性单γ-芳基化。Buchwald G3预催化剂与Xantphos或N -Xantphos配体结合被证明是高反应性的,可与芳基碘化物,溴化物,氯化物和三氟甲磺酸酯结合以实现所需的转化。宽泛的功能性是可以容忍的,包括在转化过程中激活杂芳基卤化物的能力。介绍了芳基卤化物的初始范围和该方法的局限性。