L. M. Guard, N. Hazari
Apr 15, 2013
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0
Influential Citations
12
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Journal
Organometallics
Abstract
The reaction of tris(2-dimethylaminoethyl)amine (Me6tren) with Grignard reagents and related Mg precursors has been investigated. Treating Me6tren with 2 equiv of PhMgBr in diethyl ether resulted in the formation of [(Me6tren)MgBr]Br (1), in which Me6tren is bound in a κ4 fashion. This is the first example of a Mg complex containing Me6tren or a related tris(aminoethyl)amine ligand. In contrast, when MeMgBr was treated with either 1 or 2 equiv of Me6tren, a mixture containing 1 and the alkyl species [(Me6tren)MgMe]Br (3) was produced. It was not possible to separate the two compounds to generate a pure sample of 3. Reaction between Me6tren and greater than 4 equiv of MeMgBr formed [(Me6tren)MgBr]2[MgBr4] (4), an analogue of 1 with a different counterion. The highly unusual dialkyl Mg compound (Me6tren)MgMe2 (5), which features a κ3-bound Me6tren ligand, was synthesized through the reaction of Me2Mg with Me6tren. The reaction of 5 with excess phenylacetylene or carbon dioxide yielded (Me6tren)Mg(CCPh)2 (6)...