作者:Nicola Otto、Till Opatz
DOI:10.3762/bjoc.8.122
日期:——
In the search for new ligands for the Ullmann diaryl ether synthesis, permitting the coupling of electron-rich aryl bromides at relatively low temperatures, 56 structurally diverse multidentate ligands were screened in a model system that uses copper iodide in acetonitrile with potassium phosphate as the base. The ligands differed largely in their performance, but no privileged structural class could
在为 Ullmann 二芳基醚合成寻找新配体的过程中,允许在相对较低的温度下偶联富含电子的芳基溴化物,在一个模型系统中筛选了 56 个结构不同的多齿配体,该模型系统使用乙腈中的碘化铜,以磷酸钾为碱. 配体的性能差异很大,但无法确定特殊的结构类别。