Development of modified Pauson-Khand reactions with ethylene and utilisation in the total synthesis of (+)-taylorione
作者:Johannes G. Donkervoort、Alison R. Gordon、Craig Johnstone、William J. Kerr、Udo Lange
DOI:10.1016/0040-4020(96)00259-1
日期:1996.5
Two complementary Pauson-Khand annulation protocols for use with the gaseous alkene, ethylene, are described. These N-oxide promoted reactions (10 examples) are shown to proceed under both mild autoclave conditions or, more conveniently, at atmospheric pressure. The developed methodology has been utilised as the key transformation in the total synthesis of the sesquiterpene (+)-taylorione which has
描述了与气态烯烃乙烯一起使用的两种互补的Pauson-Khand环合方案。这些N-氧化物促进的反应(10个实施例)显示在温和的高压釜条件下或更方便地在大气压下进行。所开发的方法已被用作倍半萜(+)-taylorione的全合成中的关键转化,这已经可以从容易获得的(+)-2-carene中以良好的总收率实现。