Gold(I)/(III)-Catalyzed Rearrangement of Divinyl Ketones and Acyloxyalkynyloxiranes into Cyclopentenones
作者:Marie Hoffmann、Jean-Marc Weibel、Pierre de Frémont、Patrick Pale、Aurélien Blanc
DOI:10.1021/ol403663j
日期:2014.2.7
Multifaceted gold(I/III) catalysts with their carbophilic and oxophilic characters catalyzed very efficiently the formation of hydroxylated cyclopentenones from simple divinyl ketones or acyloxyalkynyloxiranes. The Nazarov reaction is rapidly performed in dichloroethane with 5 mol % of the simple gold(III) trichloride salt at 70 °C, while the rearrangement of alkynyloxiranes requires 5 mol % of a more
具有嗜碳和嗜氧特性的多面金(I / III)催化剂非常有效地催化了由简单的二乙烯基酮或酰氧基炔基氧杂环戊烷形成的羟基化环戊烯酮。Nazarov反应是在70°C的二氯乙烷中与5 mol%的简单三氯化金(III)盐快速反应完成的,而炔基氧杂环戊烷的重排则需要5 mol%的更稳定的NHC三氟亚胺金(III)络合物。