Template Synthesis of Ruthenium Complexes with Saturated and Benzannulated NH,NH-Stabilized N-Heterocyclic Carbene Ligands

Autor:	Aarón Flores-Figueroa, Tania Pape, Oliver Kaufhold, F. Ekkehardt Hahn
Rok vydání:	2009
Předmět:	Ligand Isocyanide Organic Chemistry chemistry.chemical_element Protonation Ring (chemistry) Medicinal chemistry Ruthenium Inorganic Chemistry chemistry.chemical_compound chemistry Intramolecular force Organic chemistry Physical and Theoretical Chemistry Triphenylphosphine Carbene
Zdroj:	Organometallics. 28:896-901
ISSN:	1520-6041 0276-7333
DOI:	10.1021/om800964n
Popis:	Reaction of [RuCl2(p-cymene)]2 with 2-azidoethyl isocyanide (1a) or 2-azidophenyl isocyanide (1b) leads to the isocyanide complexes [RuCl2(p-cymene)(1a)] [2a] and [RuCl2(p-cymene)(1b)] [2b], respectively. Complex [2a] reacts with triphenylphosphine to yield the complex with a phosphinimine-substituted isocyanide ligand [3]. The attempted hydrolysis of the phosphinimine group in [3] with HCl·Et2O produced the complex with a protonated phosphinimine ligand [4]Cl instead of the expected complex with a 2-aminoethyl isocyanide ligand. An alternative method for the reduction of the azido group in [2a] and [2b] using FeCl3/NaI has been applied leading to complexes with the 2-amino-substituted isocyanide ligands, which undergo intramolecular ring closure to yield the complexes of type [RuI2(p-cymene)(NHC)], [5a] and [5b].
Databáze:	OpenAIRE
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