作者:Tamás Patonay、István Pazurik、Anita Ábrahám
DOI:10.1071/ch13006
日期:——
Sonogashira reaction of bromochromones and -flavones with a bromine atom on their benzene or heterocyclic ring with various terminal alkynes gave the desired products with nearly the same efficiency as the previously used iodine derivatives. The coupling reactions were performed in the presence of [tetrakis(triphenylphosphine)palladium(0)], copper(i) co-catalyst, and triethylamine, resulting in the
溴苯并二氢吡喃酮和-黄酮与苯或杂环上的溴原子与各种末端炔烃的Sonogashira反应产生所需的产物,其效率几乎与以前使用的碘衍生物相同。偶联反应在[四(三苯基膦)钯(0)],铜(i)助催化剂和三乙胺的存在下进行,导致形成了许多迄今未知的炔基化氧杂环,并为进一步的应用提供了证据这些O-杂环的反应。通过除去三甲基甲硅烷基保护基制备具有乙炔基官能团的苯并在第二次交叉偶联反应中用作末端炔烃。