کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1313033 | 975522 | 2006 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Alkyne hydrophosphinylation catalyzed by rhodium pyrazolylborate complexes Alkyne hydrophosphinylation catalyzed by rhodium pyrazolylborate complexes](/preview/png/1313033.png)
Despite numerous examples of stoichiometric bond activation reactions using rhodium pyrazolylborate complexes, the use of these complexes in catalytic reactions is still uncommon. We have evaluated the activity of Tp∗Rh(PPh3)2 [Tp∗ = hydrotris(3,5-dimethylpyrazolyl)borate] and Tp∗Rh(cod) (cod = cyclooctadiene) in alkyne hydrophosphinylation relative to a series of known catalysts for this reaction. Both Tp∗Rh(PPh3)2 and Tp∗Rh(cod) are active catalysts for alkyne hydrophosphinylation, although neither is as active as Wilkinson’s catalyst. The ability of Tp∗Rh(PPh3)2 to effect hydrophosphinylation of a series of alkyne substrates with diphenylphosphine oxide is also presented. In addition, we report the crystal structures of the products of the reactions between diphenylphosphine oxide and both [μ-ClRh(cod)]2 and Tp∗Rh(PPh3)2. The former is a possible catalytically relevant intermediate, while the latter is inactive.
Tp∗Rh(PPh3)2 [Tp∗ = hydrotris(3,5-dimethylpyrazolyl)borate] and Tp∗Rh(cod) (cod = cyclooctadiene) are active catalysts for alkyne hydrophosphinylation, although neither is as active as Wilkinson’s catalyst. Tp∗Rh(PPh3)2 effects hydrophosphinylation of a series of alkyne substrates. The crystal structures of the products of the reactions between diphenylphosphine oxide and both [μ-ClRh(cod)]2 and Tp∗Rh(PPh3)2 are also presented.Figure optionsDownload as PowerPoint slide
Journal: Inorganica Chimica Acta - Volume 359, Issue 9, 1 June 2006, Pages 2918–2923