Intermolecular C-H bond activation promoted by a titanium alkylidyne |
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| Authors: | Bailey Brad C Fan Hongjun Baum Erich W Huffman John C Baik Mu-Hyun Mindiola Daniel J |
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| Affiliation: | Department of Chemistry, Molecular Structure Center and School of Informatics, Indiana University, Bloomington, Indiana 47405, USA. |
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| 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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