Lithiation of tricarbonyl(fluoroanisole)chromium(0) complexes occurs exclusively ortho to the fluorine atom, not the oxygen atom as observed in the uncomplexed arenes; the X-ray structure of complex (1) shows that the specificity is not caused by steric inhibition of lithium base co-ordination by oxygen.
J. P. Gilday and D. A. Widdowson, J. Chem. Soc., Chem. Commun., 1986, 1235 DOI: 10.1039/C39860001235
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