کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1327873 | 977512 | 2005 | 9 صفحه PDF | دانلود رایگان |
With the aim to determine the effect of Lewis acidity of rhenium(I) carbonyl complexes on their catalytic properties, and to develop more efficient catalysts based on Re(I) carbonyl systems, a series of rhenium(I) carbonyl triflate complexes with various degrees of Lewis acidity was investigated. Pyridine-substituted bromo tricarbonyl rhenium(I) complexes of the type fac-[ReBr(CO)3L2] (L = py-Cl, py, py-Me and py-NMe2) were synthesized from [ReBr(CO)5] using trimethylamine N-oxide (TMNO) as decarbonylating agent. The complexes [ReBr(CO)5] and fac-[ReBr(CO)3L2] were then reacted with silver triflate to yield the complexes [Re(CF3SO3)(CO)5] and fac-[Re(CF3SO3)(CO)3L2]. The synthesis and characterization of these complexes and their application in the catalysis of the cyclization of 6-aminohex-1-yne are discussed. The crystal structure of [Re(CF3SO3)(CO)3(py)2] is also presented.
The synthesis of pyridine-substituted triflato tricarbonyl rhenium(I) complexes of the type fac-[Re(CF3SO3)(CO)3L2] (L = py-Cl, py, py-Me and py-NMe2) and their use in the catalysis of the intramolecular hydroamination of 6-aminohex-1-yne is described.Figure optionsDownload as PowerPoint slide
Journal: Journal of Organometallic Chemistry - Volume 690, Issue 16, 15 August 2005, Pages 3774–3782