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Zastosuj identyfikator do podlinkowania lub zacytowania tej pozycji: http://hdl.handle.net/20.500.12128/964
Tytuł: An attractive route to transamidation catalysis: Facile synthesis ofnew o-aryloxide-N-heterocyclic carbene ruthenium(II) complexescontaining trans triphenylphosphine donors
Autor: Nirmala, Muthukumaran
Prakash, Govindan
Viswanathamurthi, Periasamy
Małecki, Jan Grzegorz
Słowa kluczowe: Imidazolium proligands; [Ru–NHC] complexes; X-ray diffraction; Transmetallation; Transamidation
Data wydania: 2015
Wydawca: Elsevier
Abstrakt: tWell-defined robust ruthenium(II) complexes 3a–d bearing o-aryloxide-N-heterocyclic carbene ligandswith different wingtip substituents (3a (R = Me), 3b (R = Ph), 3c (R =iPr) and 3d (R = Mes)) in the imi-dazole ring were synthesized in good yields by the reaction of imidazolium proligands with metalprecursor [RuHCl(CO)(PPh3)3] by transmetallation from the corresponding silver carbene complexes.All the Ru(II)–NHC complexes have been characterized by elemental analyses, spectroscopic methodsas well as ESI mass spectrometry. The molecular structure of the complex 3a was identified by meansof single-crystal X-ray diffraction analysis, which revealed that the complexes possess a distorted octa-hedral geometry. In order to explore the catalytic potential of the synthesized complexes, all the four[Ru–NHC] complexes [3a–d] were tested as catalysts for transamidation of carboxamides with amines.Notably, the complex 3a was found to be very efficient and versatile catalyst toward transamidation of awide range of amides with amines.
URI: http://hdl.handle.net/20.500.12128/964
DOI: 10.1016/j.molcata.2015.03.015
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