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Atom-Economical Synthesis of the Versatile Ruthenium Precursor [TpRuCl(COD)] (Tp = Hydrotris(pyrazol-1-yl)borate) Discloses a Diamine Ligand Dealkylation Process

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URI: http://hdl.handle.net/10498/20447

DOI: 10.1021/om501307a

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2015-Atom-economical synthesis of the versatile ruthenium precursor [TpRuCl(COD)] (Tp = hydrotris(pyrazol-1-yl)borate) discloses a diamine ligand dealkylation process.pdf (457.4Kb)
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Author/s
Jiménez Tenorio, ManuelAuthority UCA; Puerta Vizcaino, María del Carmen; Valerga Jiménez, Pedro Sixto
Date
2015-02
Department
Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica
Source
Organometallics 2015, 34, 1001−1004
Abstract
An atom-economical, more environmentally friendly alternative method of synthesis of the versatile complex [TpRuCl(COD)] (1) (Tp = hydrotris(pyrazol-1-yl)borate; COD = 1,5-cyclooctadiene) has been developed. Instead of starting from [RuHCl(COD)(NH2NMe2)3]+, 1 can be conveniently prepared by reaction of the derivative trans-[RuCl2(COD)(Me2NCH2- CH2NHMe)] (2) with KTp in acetone at 55 °C. Compound 2, which has been structurally characterized by X-ray crystallography, results from an unexpected diamine dealkylation process which takes place in the course of the reaction of [{RuCl2(COD)}n] with tmeda (tmeda = Me2NCH2CH2NMe2) in toluene at 80 °C. This process had been overlooked in the literature, as compound 2 had been misidentified as cis-[RuCl2(COD)(tmeda)], and suggests that amine dealkylation might occur more commonly than previously anticipated.
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Attribution-NonCommercial-NoDerivatives 4.0 Internacional
This work is under a Creative Commons License Attribution-NonCommercial-NoDerivatives 4.0 Internacional

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