Trans-metal-trapping : concealed crossover complexes en route to transmetallation?

Uzelac, Marina and Mulvey, Robert E. (2018) Trans-metal-trapping : concealed crossover complexes en route to transmetallation? Chemistry - A European Journal, 24 (31). pp. 7786-7793. ISSN 0947-6539

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    Abstract

    Defined as the transfer of ligands from one metal to another, transmetallation is a common reaction in organometallic chemistry. Its chemical celebrity stems from its role in important catalytic cycles of cross-coupling reactions such as those of Negishi, Sonogashira, Stille, or Suzuki. This article focuses on trans-metal-trapping (TMT), which could be construed as partially complete transmetallations. On mixing two distinct organometallic compounds, of for example lithium with aluminium or gallium, the two metals meet in a crossover co-complex, but the reaction ceases at that point and full transmetallation is not reached. Though in its infancy, trans-metal-trapping shows promise in transforming failed lithiations into successful lithiations and in stabilising sensitive carbanions through cooperative bimetallic effects making them more amenable to onward reactivity.

    ORCID iDs

    Uzelac, Marina ORCID logoORCID: https://orcid.org/0000-0002-5060-7017 and Mulvey, Robert E. ORCID logoORCID: https://orcid.org/0000-0002-1015-2564;