Mechanism of Hydride Abstraction by Cyclopentadienone‐Ligated Carbonylmetal Complexes (M = Ru, Fe)
作者:Megan K. Thorson、Kortney L. Klinkel、Jianmei Wang、Travis J. Williams
DOI:10.1002/ejic.200800975
日期:2009.1
the corresponding carbonyl compounds. The mechanism of this reaction has been the subject of some controversy, but it is generally believed to proceed through concerted transfer of proton and hydride, respectively, to the cyclopentadienone ligand and the ruthenium center. In this paper we further study the hydride transfer process as an example of a coordinatively directed hydride abstraction by adding
Cyclopentadienone Synthesis by Rhodium(I)-Catalyzed [3 + 2] Cycloaddition Reactions of Cyclopropenones and Alkynes
作者:Paul A. Wender、Thomas J. Paxton、Travis J. Williams
DOI:10.1021/ja065868p
日期:2006.11.1
The Rh(I)-catalyzed [3 + 2] cycloaddition of cyclopropenones and alkynes is found to provide a highly efficient and regiocontrolled route to cyclopentadienones (CPDs), building blocks of widespread use in the synthesis of natural and non-natural products, therapeutic leads, polymers, dendrimers, devices, and antigen presenting scaffolds. The versatility of the method is explored with 23 examples representing
Ruthenium- and Rhodium-Catalyzed Ring-Opening Coupling Reactions of Cyclopropenones with Alkenes or Alkynes
作者:Teruyuki Kondo、Ryosuke Taniguchi、Yu Kimura
DOI:10.1055/s-0037-1609339
日期:2018.4
rhodium complexes, especially [RhCl(η 4 -1,5-cod)] 2 , show high catalytic activity for the desired cocyclization reactions to give the corresponding cyclopentenones in high yields and selectivities. In addition, [RhCl(η 4 -1,5-cod)] 2 realizes the catalytic ring-opening cocyclization of cyclopropenones with internal alkynes to give the corresponding cyclopentadienones. In all these reactions, ruthena-