Dual catalysis by Cu(i): facile single step click and intramolecular C–O bond formation leading to triazole tethered dihydrobenzodioxines/benzoxazines/benzoxathiines/benzodioxepines
作者:M. Nagarjuna Reddy、K. C. Kumara Swamy
DOI:10.1039/c3ob41332b
日期:——
involving two different reactions, click (alkyne–azide) and carbon–oxygen bond formation (aryl iodide–secondary alcohol) in a single step, is reported. Synthesis of novel benzodioxines (benzodioxanes), benzoxazines, benzoxathiines and benzodioxepines, which feature benzo-condensed six or seven membered rings containing two hetero-atoms attached to a 1,2,3-triazole, is described. As an extension, such compounds
据报道,在一个步骤中,双铜催化涉及两个不同的反应,即点击(炔烃-叠氮化物)和碳-氧键形成(芳基碘化物-仲醇)。描述了新颖的苯并二恶英(苯并二恶烷),苯并恶嗪,苯并二硫杂环庚烷和苯并二氧杂环丁烷的合成,其特征是苯并缩合的六元或七元环含有两个连接到1,2,3-三唑的杂原子。作为扩展,还通过环氧化物的开环和使用Cu(I)环化来合成此类化合物。所有关键产品均已通过单晶X射线晶体学表征。