Successive C–C Coupling of Dienes to Vicinally Dioxygenated Hydrocarbons: Ruthenium Catalyzed [4 + 2] Cycloaddition across the Diol, Hydroxycarbonyl, or Dione Oxidation Levels
作者:Laina M. Geary、Ben W. Glasspoole、Mary M. Kim、Michael J. Krische
DOI:10.1021/ja400691t
日期:2013.3.13
The ruthenium(0) catalyst generated from Ru-3(CO)(12) and tricyclohexylphosphine or BIPHEP promotes successive C-C coupling of dienes to vicinally dioxygenated hydrocarbons across the diol, hydroxyketone, and dione oxidation levels to form products of [4 + 2] cycloaddition. A mechanism involving diene-carbonyl oxidative coupling followed by intramolecular carbonyl addition from the resulting allylruthenium intermediate is postulated.