Copper(I) Iodide-Catalyzed (Het)arylation of Diethyl Malonate with (Het)aryl Bromides by Using 1,3-Benzoxazole as a Ligand
作者:Zheng Fang、Kai Guo、Yu Zeng、Hao-liang Zheng、Zhao Yang、Cheng-Kou Liu
DOI:10.1055/s-0036-1591210
日期:2018.1
An efficient Ullmann-type coupling of aryl bromides with diethyl malonate in the presence of copper(I) iodide and 1,3-benzoxazole is presented. This method has a broad substrate scope (heterocyclic and phenyl bromides) and good functional-group tolerance (OMe, Me, Ac, CN, NO2, F, and Cl). Moreover, less time is needed to reach full conversion (3–9 hours).
提出了在碘化铜 (I) 和 1,3-苯并恶唑存在下芳基溴化物与丙二酸二乙酯的有效 Ullmann 型偶联。该方法具有广泛的底物范围(杂环和苯基溴化物)和良好的官能团耐受性(OMe、Me、Ac、CN、NO2、F 和 Cl)。此外,达到完全转化所需的时间更少(3-9 小时)。