Efficient synthesis of 3-aryl-1H-indazol-5-amine by Pd-catalyzed Suzuki–Miyaura cross-coupling reaction under microwave-assisted conditions
作者:Shengqiang Wang、Ruiyun Guo、Jingya Li、Dapeng Zou、Yangjie Wu、Yusheng Wu
DOI:10.1016/j.tetlet.2015.04.024
日期:2015.6
Various 3-aryl-1H-indazol-5-amine derivatives were synthesized by Pd-catalyzed Suzuki–Miyaura cross-coupling reaction of (NH) free 3-bromo-indazol-5-amine with arylboronic acids under microwave-assisted conditions. The coupling reaction can be carried out under the conditions with dioxane/H2O as solvent, Pd(OAc)2 and RuPhos as catalyst system, and K3PO4 as a base in good to excellent yields.
在微波辅助条件下,通过(Pd)催化的(NH)游离3-溴-吲哚-5胺与芳基硼酸的Suzuki-Miyaura交叉偶联反应,合成了各种3-芳基-1 H-吲哚5胺衍生物。可以在以二恶烷/ H 2 O为溶剂,Pd(OAc)2和RuPhos为催化剂体系,以K 3 PO 4为碱的条件下以良好或优异的产率进行偶联反应。