Transition Metal-Templated Reduction of Carbon-Fluorine Bonds:

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Presentation transcript:

Transition Metal-Templated Reduction of Carbon-Fluorine Bonds: A New General Route to Unsaturated Fluorocarbon Ligands Russell P. Hughes, Department of Chemistry, Dartmouth College, Hanover NH 03755 Selective reduction of ligated fluoroalkyl groups to give unsaturated fluorinated ligands can be achieved; the reactions are mediated and templated by transition metal centers. 2Na/Pb alloy, THF, -78°C F I r C C O 2KC8 CF3 I Our methodology allows the first examples of a variety of new ligands to be isolated; shown here is the first example of a metal carbene complex containing two electron withdrawing CF3 substituents, and its further reduction to yield a perfluoroallene complex.1 CF3 4KC8 Our long term goals are to devise methods for the reductive remediation and/or selective chemical functionalization of environmentally harmful fluorocarbons. (1) Yuan, J.; Hughes, R. P.; Rheingold, A. L., Eur. J. Inorg. Chem. 2007, 4723-4725.