Three-Component Ring-Opening Reactions of Cyclic Ethers, α-Diazo Esters, and Weak Nucleophiles under Metal-Free Conditions
作者:Lin Lu、Chuwei Chen、Huanfeng Jiang、Biaolin Yin
DOI:10.1021/acs.joc.8b02091
日期:2018.12.7
A protocol for three-component reactions of cyclic ethers, α-diazo esters, and weak nitrogen, oxygen, carbon, and sulfur nucleophiles (pKa = 2.2–14.8) to afford a variety of structurally complex α-oxyalkylated esters is reported. These reactions involve intermolecular activation of the cyclic ether (present in excess) by the α-diazo ester to form an oxonium ylide under metal-free conditions, followed
据报道,存在一种用于环醚,α-重氮酯与弱氮,氧,碳和硫亲核试剂(p K a = 2.2–14.8)的三组分反应的协议,该反应可提供多种结构复杂的α-氧基烷基化酯。这些反应包括在无金属条件下,α-重氮酯对环状醚(过量存在)进行分子间活化,形成叶立德叶立酮,然后由亲核试剂开环。