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  • Title: Intermolecular C-H bond activation promoted by a titanium alkylidyne.
    Author: Bailey BC, Fan H, Baum EW, Huffman JC, Baik MH, Mindiola DJ.
    Journal: J Am Chem Soc; 2005 Nov 23; 127(46):16016-7. PubMed ID: 16287275.
    Abstract:
    The transient titanium alkylidyne complex (PNP)TiCtBu (PNP = N-[2-P(CHMe2)2-4-methylphenyl]2-), prepared from alpha-hydrogen abstraction of the corresponding alkylidene-alkyl species (PNP)Ti=CHtBu(CH2tBu), can readily undergo intermolecular 1,2-addition of C-H bonds of benzene and SiMe4. Synthesis and reactivity, isotopic labeling, kinetics, and theoretical studies strongly favor an alkylidyne pathway and the alpha-H abstraction step to be the rate-determining step.
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