Gold(I)‐Catalyzed Regio‐ and Stereoselective 1,3‐Dipolar Cycloaddition Reactions of 1‐(1‐Alkynyl)cyclopropyl Oximes with Nitrones: A Modular Entry to Highly Substituted Pyrrolo[3,4‐
<i>d</i>
][1,2]oxazepines
作者:Yanqing Zhang、Junliang Zhang
DOI:10.1002/adsc.201200288
日期:2012.9.17
An efficient approach for the synthesis of highlysubstitutedpyrrolo[3,4‐d][1,2]oxazepines has been achieved by gold(I)‐catalyzed1,3‐dipolarcycloadditionreactions of 1‐(1‐alkynyl)cyclopropyloximes with nitrones in good to excellent yields as a single diastereomer. A complete chirality transfer was observed in this transformation.
通过金(I)催化的1-(1-炔基)环丙基肟的1,3-偶极环加成反应,已经获得了一种高效合成高度取代的吡咯并[3,4- d ] [1,2]氮杂ze庚烷的方法。与硝酮一起以单一非对映异构体的形式获得良好或优异的收率。在该转化中观察到了完全的手性转移。
Highly Substituted Pyrroles by a Gold(I)-Catalyzed Tandem Reaction of 1-(1-Alkynyl)cyclopropyl Oxime Ethers with Nucleophiles
作者:Junliang Zhang、Yanqing Zhang
DOI:10.1055/s-0031-1290978
日期:2012.6
A gold(I)-catalyzed tandem reaction of 1-(1-alkynyl) cyclopropyl oxime ethers with nucleophiles under mild conditions has been developed, which provides a facile access to highly substituted pyrroles in moderate to excellent yields.