This work describes CuBr-catalyzed cross-coupling of sterically hindered phenols with substituted aryl halides and hetero aryl halides under microwave conditions using commercially available amino acids as the reaction promoters and K3PO4 as the base. This protocol shown to tolerate sensitive functional groups like CN, CHO etc., Especially, in case of 3-bromopyridine coupling with substituted phenols supported this letter in track record of the reactivity.
这项工作描述了在微波条件下,使用市售
氨基酸作为反应
促进剂,以K3PO4为碱,通过CuBr催化的空间位阻
酚与取代芳基卤化物和杂芳基卤化物的交叉耦合反应。该方案被证明能容忍敏感的功能团,如CN、CHO等。特别是,3-
溴吡啶与取代
酚的耦合反应证实了这种反应性的记录。