Organolithium amine-chelated

Because of the exceptional reactivity and chemical importance of the amine-chelated organolithium reagents, their stereochemical properties are of special significance. Our interest centered on six points ... 

With the exception of methyllithium, all types of organolithium compounds have yielded 1 1 complexes with bidentate, tridentate, or tetradentate chelating tertiary poly amines (16). Most are crystalline but BuLi TMED is an oil. 

In short the chemistry and properties of the inorganic lithium chelates should promote their uses in many applications. This is the case for the N-chelated organolithium reagents, as evidenced by the frequency of appearance of these systems in the literature. We hope that the poly-amine-purification technique presented here will improve the availability of useful chelating ligands and stimulate additional research in this area. 

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