Organometallic intermediates catalytic processes, alkyl

The role of the metal catalysts is varied in these reactions, but they are most commonly involved in the formation of organometallic intermediates RM which subsequently reductively eliminate to the coupled product. Reactions leading to the formation of the key intermediate R-M and the elucidation of the pathways for its decomposition are thus central to the understanding of these catalytic processes. We will first summarize briefly the processes involved in the formation and destruction of RM, which will be followed by our studies of various catalytic systems leading to the coupling of alkyl groups. 

Alkyl Transfers from Organometallic Intermediates in Catalytic Process ... 

In this paragraph, the stoichiometric palladium organometallic complexes are discussed. As mentioned earlier, we will not give a comprehensive overview—over 64000 entities with a palladium-carbon bond are known— but we rather focus on the most common classes and complexes. For an overview describing some recent complexes important to catalysis, see ref Due to the facile 3-hydride elimination of palladium compounds with alkyl chains, they are mostly involved as intermediates in catalytic processes. 

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