Diether functionalized rhodium(I)–N-heterocyclic carbene complexes and their catalytic application for transfer hydrogenation reactions
Makaleler > Tam Makale · 2010
Yazarlar: Süleyman GÜLCEMAL, Jean-Claude DARAN, BEKİR ÇETİNKAYA
Inorganica Chimica Acta, SCI Expanded İndekslerine Giren Dergi, Uluslararası, Wos, 2010, cilt 365, ss 264-268
DOI: 10.1016/j.ica.2010.09.023
Özet
N-heterocyclic carbene (NHC) complexes of rhodium(I) (3 and 4) bearing one diether (MeOCH2CH2OCH2-CH2-NHC) functionality on N-1 and bulky benzyl groups (CH2-C6H2(CH3)(3)-2,4,6 and CH2-C-6(CH3)(5)) on N-3 of (5,6-dimethyl)benzimidazole were synthesized by deprotonation of the corresponding benzimidazolium salt with [Rh(mu-OMe)(1,5-cod)](2) in dichloromethane at ambient temperature. All compounds have been fully characterized by elemental analysis, H-1 and C-13 NMR spectroscopy. X-ray diffraction studies on single crystals of 3a and 3b confirm the cis square planar geometry. All of the new benzimidazol-2-ylidene rhodium(I) complexes were found to be effective catalysts for the transfer hydrogenation reaction. (C) 2010 Elsevier B. V. All rights reserved.