Abstract
The direct deprotonation of the chiral nitrogen ligands (R,R)-TECDA (2) and (R,R)-TEMCDA (6) with tert-butyllithium to highly reactive building blocks is reported. The regioselectivity of the lithiation reactions can be explained by the isolated precoordinated intermediates such as tBuLi·(R,R)-TECDA in combination with computational studies.
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