“On Water” Palladium Catalyzed Direct Arylation of 1H-Indazole and 1H-7-Azaindazole
作者:Khadija Gambouz、Abdelmoula El Abbouchi、Sarah Nassiri、Franck Suzenet、Mostapha Bousmina、Mohamed Akssira、Gérald Guillaumet、Saïd El Kazzouli
DOI:10.3390/molecules25122820
日期:——
The C3 direct arylation of 1H-indazole and 1H-7-azaindazole has been a significant challenge due to the lack of the reactivity at this position. In this paper, we describe a mild and an efficient synthesis of new series of C3-aryled 1H-indazoles and C3-aryled 1H-7-azaindazoles via a C3 direct arylation using water as solvent. On water, PPh3 was effective as a ligand along with a lower charge of the
由于在该位置缺乏反应性,1H-吲唑和 1H-7-氮杂吲唑的 C3 直接芳基化一直是一个重大挑战。在本文中,我们描述了一种新系列 C3-芳基化 1H-吲唑和 C3-芳基化 1H-7-氮杂吲唑通过使用水作为溶剂的 C3 直接芳基化的温和有效合成。在水中,PPh3 作为配体是有效的,在 100 °C 下催化剂 Pd(OAc)2 (5 mol%) 的电荷较低,导致 C3-芳基化 1H-吲唑或 C3-芳基化 1H-7-氮杂吲唑中等至良好的产量。