Ruthenium Halide Complexes as N-Alkylation Catalysts

A range of ruthenium‐arene compounds with chloride, bromide or iodide ligands were prepared and tested as catalysts for the homogeneous redox neutral alkylation of tert‐butylamine with phenethyl alcohol, and compared to the previously reported catalyst [RuCl2(p‐cymene)]2, in the presence of the diph...

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Bibliographic Details
Published in:European journal of inorganic chemistry 2014-04, Vol.2014 (11), p.1974-1983
Main Authors: Rodríguez-Bárzano, Andrea, Fonseca, Joel D. A., Blacker, A. John, McGowan, Patrick C.
Format: Article
Language:English
Subjects:
Alkylation
Arene ligands
Aromatic compounds
Catalysis
Catalysts
Catalytic activity
Halides
Homogeneous catalysis
Iodides
Phosphane ligands
Ruthenium
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Summary:A range of ruthenium‐arene compounds with chloride, bromide or iodide ligands were prepared and tested as catalysts for the homogeneous redox neutral alkylation of tert‐butylamine with phenethyl alcohol, and compared to the previously reported catalyst [RuCl2(p‐cymene)]2, in the presence of the diphosphine 1,1′‐bis(diphenylphosphino)ferrocene (dppf). The best catalytic activities were obtained with ruthenium iodide compounds. The formation of either [RuX(p‐cymene)(dppf)][X] or [(RuX2(p‐cymene))2(dppf)] (X = halide) under the catalytic conditions employed was investigated. Haloruthenium arene complexes have been tested as catalysts for the homogeneous redox neutral alkylation of tert‐butylamine with phenethyl alcohol in the presence of 1,1′‐bis(diphenylphosphino)ferrocene (dppf). Halide identity and arene substitutions influence the catalytic activity and both RuX(p‐cymene)(dppf)][X] and [(RuX2(p‐cymene))2(dppf)] (X = halide) appear to play a role in catalysis.
ISSN:1434-1948
1099-0682
DOI:10.1002/ejic.201400117