Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 54, Issue 35, Pages 10173-10177Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201504073
Keywords
amine-boranes; homogeneous catalysis; P ligands; rhodium; X-ray diffraction
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Funding
- EPSRC
- Engineering and Physical Sciences Research Council [1112179] Funding Source: researchfish
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{Rh(xantphos)}-based phosphido dimers form by P-C activation of xantphos (4,5-bis(diphenylphosphino)-9,9-dimethylxanthene) in the presence of amine-boranes. These dimers are active dehydrocoupling catalysts, forming polymeric [H2BNMeH](n) from H3B center dot NMeH2 and dimeric [H2BNMe2](2) from H3B center dot NMe2H at low catalyst loadings (0.1 mol%). Mechanistic investigations support a dimeric active species, suggesting that bimetallic catalysis may be possible in amineborane dehydropolymerization.
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