Ru-catalyzed 1,4-addition of arylboronic acids to acrylic acid derivatives in the presence of phenols
作者:Lei Zhang、Xiaomin Xie、Zhiyong Peng、Lei Fu、Zhaoguo Zhang
DOI:10.1039/c3cc43095b
日期:——
[Ru(p-cymene)Cl2]2-catalyzed 1,4-addition reactions between arylboronic acids and butyl acrylate and acrylamide in the presence of phenols were investigated, good to excellent yields were obtained. The addition of phenols remarkably promoted the protonolysis and inhibited the β-H elimination of the 1,4-addition intermediates, and also efficiently suppressed the protonolysis of arylboronic acids.
以[Ru(p-cymene)Cl2]2为催化剂,研究了芳基硼酸与丁基丙烯酸酯和丙烯酰胺在酚类化合物存在下的1,4-加成反应,获得了良好的至优异的产率。酚的添加显著促进了质子解离,抑制了1,4-加成中间体的β-H消除,并有效抑制了芳基硼酸的质子解离。