کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
67525 | 48485 | 2007 | 6 صفحه PDF | دانلود رایگان |

New ruthenium benzylidene complexes (3) bearing N-heterocyclic carbene and chelating phosphino-carboxylate ligands were easily prepared by the reaction of (H2IMe)(PPh3)(Cl)2RuCHPh (1) [H2IMe = 1,3-bis(2,6-dimethylphenyl)-4,5-dihydroimidazol-2-ylidene] with corresponding phosphino-carboxylates 2. Catalysts featuring a five-membered or rigid six-membered chelating ring proved to exhibit enhanced stability and high catalytic efficiency toward the ring-closing metathesis (RCM) reaction of diethyl diallylmalonate and diallylmalononitrile.
The synthesis, characterization, and ring-closing metathesis (RCM) activity of new ruthenium benzylidene complexes bearing N-heterocyclic carbene and chelating phosphino-carboxylate ligands are presented. Catalysts featuring a five-membered or rigid six-membered chelating ring proved to exhibit enhanced stability and high catalytic efficiency toward the RCM reactions of diethyl diallylmalonate and diallylmalononitrile, especially at increased temperature. Figure optionsDownload as PowerPoint slide
Journal: Journal of Molecular Catalysis A: Chemical - Volume 275, Issues 1–2, 17 September 2007, Pages 194–199