Treatment of (η(1)-mesityl)(2)Fe(κ(2)-TMEDA) (1') with an α,β-unsaturated carbonyl compound results in 1,4-addition of the mesityl group to give an iron enolate quantitatively. The Z-configuration of the enolate suggested the six-centered mechanism for the conjugate addition.

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http://dx.doi.org/10.1039/c2cc37144hDOI Listing

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