Gold(III)-Catalyzed Synthesis of Isoxazoles by Cycloisomerization of α,β-Acetylenic Oximes
作者:P. Perumal、C. Praveen、A. Kalyanasundaram
DOI:10.1055/s-0029-1219342
日期:2010.3
β-acetylenic oximes leading to substituted isoxazoles was achieved using AuCl 3 as catalyst, under moderate reaction conditions. The reaction can be applied to various acetylenic oximes and gives good to excellent yields. The methodology is amenable for the selective synthesis of 3-substituted, 5-substituted or 3,5-disubstituted isoxazoles by simply altering the substituents on the acetylenic oximes.
使用AuCl 3 作为催化剂,在温和的反应条件下实现了α,β-炔属肟的环异构化,产生了取代的异恶唑。该反应可以应用于各种炔属肟,并产生良好的收率。该方法适用于通过简单地改变炔肟上的取代基来选择性合成 3-取代、5-取代或 3,5-二取代的异恶唑。