Buchwald–Hartwig amination of aryl esters and chlorides catalyzed by the dianisole-decorated Pd–NHC complex
作者:Di-Zhong Zheng、Hong-Gang Xiong、A-Xiang Song、Hua-Gang Yao、Chang Xu
DOI:10.1039/d1ob02051j
日期:——
A modular and generic method for the Buchwald–Hartwig amination reactions of relatively unreactive aryl esters as acyl electrophiles and aryl chlorides as aryl electrophiles has been developed, leading to the efficient synthesis of amides/amines under air conditions and with low catalyst loadings. The success of this catalytic protocol is mainly attributed to the modification of the Pd–IPr skeleton
已经开发了一种模块化和通用的方法,用于将相对不活泼的芳基酯作为酰基亲电试剂和芳基氯化物作为芳基亲电试剂进行 Buchwald-Hartwig 胺化反应,从而在空气条件下和低催化剂负载下有效合成酰胺/胺。该催化方案的成功主要归功于 Pd-IPr 骨架的空间位阻和供电子苯甲醚基团的修饰。该方法还具有良好的官能团耐受性和优异的化学选择性。总之,本文提出的结果表明,有可能为不同的亲电试剂开发一种通用的通用方案以进行 Buchwald-Hartwig 胺化反应,避免过多考虑底物依赖性 C-N 键形成的反应条件。