Three-Component Assembly and Divergent Ring-Expansion Cascades of Functionalized 2-Iminooxetanes
作者:Weijun Yao、Lianjie Pan、Yiping Zhang、Gang Wang、Xiaoqin Wang、Cheng Ma
DOI:10.1002/anie.201004685
日期:2010.11.22
A bold diversification strategy: Aromatic alkynes, p‐toluenesulfonyl azide, and aromatic 2‐oxobut‐3‐ynoates underwent a copper(I)‐catalyzed multicomponent reaction to provide functionalized 2‐iminooxetanes 1, which could be converted selectively into five‐membered nitrogen‐containing heterocycles of two different sorts, depending on the reaction conditions (see scheme; Tf=trifluoromethanesulfonyl;
大胆的多元化战略:芳烃,对甲苯磺酰叠氮化物和芳族2-氧代丁3酸酯进行铜(I)催化的多组分反应,以提供功能化的2-亚氨基氧杂环丁烷1,可以选择性地将其转化为五元氮取决于反应条件(参见方案; Tf =三氟甲磺酰基; R = Et,i Pr)包含两种不同类型的杂环。