Rhodium(I)-Catalyzed Regiospecific Dimerization of Aromatic Acids: Two Direct CH Bond Activations in Water
作者:Hang Gong、Huiying Zeng、Feng Zhou、Chao-Jun Li
DOI:10.1002/anie.201500220
日期:2015.5.4
2,2′‐Diaryl acids are key building blocks for some of the most important and high‐performance polymers such as polyesters and polyamides (imides), as well as structural motifs of MOFs (metal–organic frameworks) and biological compounds. In this study, a direct, regiospecific and practical dimerization of simple aromatic acids to generate 2,2′‐diaryl acids has been discovered, which proceeds through
2,2'-二芳基酸是某些最重要的高性能聚合物(例如聚酯和聚酰胺(酰亚胺))以及MOF(金属-有机骨架)和生物化合物的结构图案的关键组成部分。在这项研究中,发现了一种简单的芳香族酸直接,区域特异性和实用的二聚体,以生成2,2'-二芳基酸,该过程通过水中两次铑催化的CH活化而进行。通过仅使用0.4-0.6 mol%的铑催化剂,该反应可轻松扩展至克级。作为概念验证,天然产物鞣花酸通过这种方法分两步合成。