Novel Ruthenium(II) Carbene Complexes: Products of the Reactions of 1-Alkynes with (η6-C6Me6)Cl2Ru(PR3)
| Autor: | Heather D. Hansen and, John H. Nelson |
|---|---|
| Rok vydání: | 2000 |
| Předmět: |
chemistry.chemical_classification
Stereochemistry Organic Chemistry Cationic polymerization chemistry.chemical_element Dihedral angle Ring (chemistry) Medicinal chemistry Ruthenium Inorganic Chemistry chemistry.chemical_compound chemistry Ylide Physical and Theoretical Chemistry Acetonitrile Carbene |
| Zdroj: | Organometallics. 19:4740-4755 |
| ISSN: | 1520-6041 0276-7333 |
| DOI: | 10.1021/om0004949 |
| Popis: | The complexes (η6-C6Me6)Cl2Ru(PR3) (1; PR3 = DPVP (diphenylvinylphosphine) (a), PMe3 (b), PPh3 (c)) react with NaPF6 in acetonitrile solutions to give the cationic complexes [(η6-C6Me6)ClRu(PR3)(NCCH3)]PF6 (2a−c) by loss of NaCl. Complexes 1a and 2a react with HC⋮CSiMe3 and HC⋮CPh (and NaPF6 for 1a) in MeOH to give the carbene complexes [(η6-C6Me6)Cl(DPVP)RuC(OCH3)CH3]PF6 (3a) and [(η6-C6Me6)Cl(DPVP)RuC(OCH3)CH2Ph]PF6 (4a), respectively. The known analogues 3b,c and 4b and the new complex 4c have been synthesized from 2b,c and HC⋮CR. The solid-state structures of these complexes show a wide variation in the orientation of the carbene plane with respect to the plane of the η6-arene ring (dihedral angles of 37.9−59.6°). The solution dynamic behavior of 3a−c and 4a−c is discussed. Complex 2a also reacts with HC⋮CCH2CH2OH in MeOH to give the oxacyclic carbene complex (5). 1a (and NaPF6) and 2a react with HC⋮CC(OH)Ph2 in MeOH to give the novel phosphorus ylide complex (6) and with dimethylpropargylamine in CH2... |
| Databáze: | OpenAIRE |
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