Sie befinden Sich nicht im Netzwerk der Universität Paderborn. Der Zugriff auf elektronische Ressourcen ist gegebenenfalls nur via VPN oder Shibboleth (DFN-AAI) möglich. mehr Informationen...
Selective Synthesis of Unsymmetrical Diboryl PtII and Diaminoboryl CuI Complexes by B-B Activation of Unsymmetrical Diboranes(4) {pinB-B[(NR)2C6H4]}
Ist Teil von
European journal of inorganic chemistry, 2014-05, Vol.2014 (15), p.2486-2489
Ort / Verlag
Weinheim: WILEY-VCH Verlag
Erscheinungsjahr
2014
Quelle
Wiley-Blackwell Full Collection
Beschreibungen/Notizen
Diaminoboryl ligands are currently intensively investigated because of their unique coordination chemical properties, for example, as part of pincer ligands. Owing to synthetic restrictions, however, access to diaminoboryl complexes is limited. Unsymmetrical diborane(4) derivatives comprising a dialkoxy‐ and a diaminoboron moiety provide efficient access to diaminoboryl complexes either by oxidative addition or by σ‐bond metathesis reactions. Especially, the latter is complementary to existing methods and overcomes the existing limitations. This is illustrated by the modular synthesis of four unsymmetrical diborane(4) derivatives and their application in the selective preparation of unprecedented unsymmetrical diboryl PtII complexes as well as sterically little encumbered diaminoboryl CuI complexes.
Unsymmetrical diboranes(4) of the type {pinB–B[(NR)2C6H4]} are used as precursors for the selective synthesis of unprecedented unsymmetrical PtII diboryl and diaminoboryl CuI complexes by oxidative addition and σ‐bond metathesis reactions, respectively. A versatile and modular route to the unsymmetrical diborane(4) compounds used is described; pin = pinacolato, Dipp = 2,6‐diisopropylphenyl, IDipp = 1,3‐bis(2,6‐diisopropylphenyl)imidazol‐2‐ylidene.