作者:Trond V. Hansen、Peng Wu、Valery V. Fokin
DOI:10.1021/jo050163b
日期:2005.9.1
3,5-Disubstituted isoxazoles are obtained in good yields by a convenient one-pot, three-step procedure utilizing a regioselective copper(I)-catalyzed cycloaddition reaction between in situ generated nitrile oxides and terminal acetylenes. Most functional groups do not interfere with the reaction, which can be performed in aqueous solvents without protection from oxygen. Since all reagents are used
通过便利的一锅三步程序,利用原位生成的腈氧化物和末端乙炔之间的区域选择性铜(I)催化的环加成反应,以方便的一锅三步程序以高收率获得了3,5-二取代的异恶唑。大多数官能团不干扰反应,该反应可以在水性溶剂中进行而无需氧气的保护。由于所有试剂都以化学计量的形式使用,因此副产物的形成得以最小化。