The copper-catalyzed reaction of allenes with bis(pinacolato)diboron and acyl electrophiles is reported. In this transformation, acyl fluorides have been proven to be more efficient coupling partners than their chloride or carboxylate analogues. The optimized reaction conditions employed were shown to be compatible with a range of commonly used functional groups, thereby allowing the formation of a
Mild Rhodium(III)-Catalyzed CH Activation and Intermolecular Annulation with Allenes
作者:Honggen Wang、Frank Glorius
DOI:10.1002/anie.201201273
日期:2012.7.16
All(enes) great! A novel RhIII‐catalyzed oxidative coupling with allenes under mild conditions provides heterocycles with exocyclic double bonds. This reaction features low catalyst loadings, high regio‐ and stereoselectivity, and excellent substrate scope. The products were derivatized and preliminary mechanistic studies were conducted.