Nanocrystalline copper(II) oxide efficiently catalyzed the conjugate addition of aliphatic amines to α,β-unsaturated compounds to produce β-amino compounds with excellent yields under mild reaction conditions. Similarly, Glycine esters are obtained in good yields by the insertion of α-diazoacetate into N–H bonds of amines. The catalyst is used for three cycles with minimal loss of activity.
The effect of the central donor in bis(benzimidazole)-based cobalt catalysts for the selective cis-1,4-polymerisation of butadiene
作者:Renan Cariou、Juan J. Chirinos、Vernon C. Gibson、Grant Jacobsen、Atanas K. Tomov、George J. P. Britovsek、Andrew J. P. White
DOI:10.1039/c0dt00402b
日期:——
of bis(benzimidazole)-based cobalt(II) dichloride complexes containing a range of different central donors has been synthesized and characterized. The nature of the central donor affects the binding of the ligand to the cobalt centre and determines the coordination geometry of the metal complexes. All complexes have been shown to catalyse the polymerization of butadiene, in combination with MAO as