Formation of substituted 1-naphthols and related products via dimerization of alkyl 3-( o -halo(het)aryl)-oxopropanoates based on a CuI-catalyzed domino C -arylation/condensation/aromatization process
作者:Heike Weischedel、Kavitha Sudheendran、Alevtina Mikhael、Jürgen Conrad、Wolfgang Frey、Uwe Beifuss
DOI:10.1016/j.tet.2016.04.067
日期:2016.6
a (het)aryl halide structure element were dimerized to 1-naphthols and related products in the presence of catalytic amounts of CuI in isopropanol. The reaction starts with an intermolecular C-arylation, which is followed by an intramolecular condensation. The final aromatization delivers the highly substituted products with yields up to 81%.
在催化量的CuI在异丙醇中的存在下,将同时具有β-酮酸酯部分和(杂)芳基卤化物结构元素的底物二聚为1-萘酚和相关产物。该反应以分子间的C-芳基化开始,随后是分子内的缩合。最终的芳构化可提供高度取代的产品,收率高达81%。