copper-based coupling (modern Ullmann) reactions. This enabled syntheses of various alkoxydienes with removable protecting groups that are valuable substrates for Diels−Alder reactions from alcohols and vinyl boronate esters. In addition to demonstrating that 3-hexyne is a ligand for copper in both stoichiometric and catalytic reactions, the reaction atmosphere was found to play a critical role.
发现简单的烯烃和
炔烃,特别是
3-己炔,是
氧化铜基偶联(现代Ullmann)反应的重要π
配体。这样就可以合成具有可去除保护基的各种烷氧基二烯,这些保护基是醇和
硼酸乙烯基酯的Diels-Alder反应的重要底物。除了证明
化学计量和催化反应中
3-己炔是
铜的
配体之外,还发现反应气氛起着关键作用。