Boronic Acids: New Coupling Partners in Room-Temperature Suzuki Reactions of Alkyl Bromides. Crystallographic Characterization of an Oxidative-Addition Adduct Generated under Remarkably Mild Conditions
作者:Jan H. Kirchhoff、Matthew R. Netherton、Ivory D. Hills、Gregory C. Fu
DOI:10.1021/ja0283899
日期:2002.11.1
The Suzukireaction is an exceptionally useful cross-coupling process that has been widely applied in synthetic chemistry, and boronicacids are, by far, the most commonly employed coupling partner. To date, however, no versatile method has been developed for cross-coupling boronicacids with unactivated alkyl (as opposed to aryl or vinyl) electrophiles. This report describes a catalyst system that
A Mild, Palladium-Catalyzed Method for the Dehydrohalogenation of Alkyl Bromides: Synthetic and Mechanistic Studies
作者:Alex C. Bissember、Anna Levina、Gregory C. Fu
DOI:10.1021/ja306323x
日期:2012.8.29
accomplish palladium-catalyzed dehydrohalogenations of alkyl bromides to form terminal olefins. We have applied this method, which proceeds in excellent yield at room temperature in the presence of a variety of functional groups, to a formal total synthesis of (R)-mevalonolactone. Our mechanistic studies have established that the rate-determining step can vary with the structure of the alkyl bromide and
Toward an Improved Understanding of the Unusual Reactivity of Pd0/Trialkylphosphane Catalysts in Cross-Couplings of Alkyl Electrophiles: Quantifying the Factors That Determine the Rate of Oxidative Addition
作者:Ivory D. Hills、Matthew R. Netherton、Gregory C. Fu