Metalation of DIBENZENECHROMIUM (cas 1271-54-1) by N,N,N′N′-tetramethylethylenediamine complexes of n-butyllithium and phenyllithium
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Add time:08/11/2019 Source:sciencedirect.com
DIBENZENECHROMIUM (cas 1271-54-1) is metalated by n-butyllithium in presence of TMEDA. The extent and orientation of metalation were investigated by mass spectrometric analysis of the products after quenching with D2O. A lithium substituent on dibenzenechromium strongly activates the molecule for further metalation. Competition metalation of dibenzenechromium/benzene mixtures demonstrated the enhanced rate of metalation and therefore increased kinetic CH acidity of the benzene molecule bound to chromium in a π-complex.
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