Organometallic reactions, involving

Anionic and cationic species are particularly easy to study in the gas phase using mass spectrometric techniques. Studies of organometallic reactions involving neutral species are becoming more prevalent. The elegant study of the catalytic hydrogenation of ethylene by photochemical... 

Organometallic Reactions Involving Hydro-Nickel, -Palladium, and -Platinum Complexes, 13, 273... 

Carbonvlation of Benzyl Halides. Several organometallic reactions involving anionic species in an aqueous-organic two-phase reaction system have been effectively promoted by phase transfer catalysts(34). These include reactions of cobalt and iron complexes. A favorite model reaction is the carbonylation of benzyl halides using the cobalt tetracarbonyl anion catalyst. Numerous examples have appeared in the literature(35) on the preparation of phenylacetic acid using aqueous sodium hydroxide as the base and trialkylammonium salts (Equation 1). These reactions occur at low pressures of carbon monoxide and mild reaction temperatures. Early work on the carbonylation of alkyl halides required the use of sodium amalgam to generate the cobalt tetracarbonyl anion from the cobalt dimer(36). 

Dipolar aprotic solvent. DP4I is a useful solvent for organometallic reactions involving strong bases or alkali metals, to which it is stable. Dehydrations and dehydrohalogenations with metlMyltriphenoxyphosphonium iodide can be conducted equally well in DMI as in HMPT22... 

For a recently-published book containing numerous examples of C-H and C-H activation as well as several other organometallic reactions involving pincer ligands, see D. Morales-Morales, The Chemistry of Pincer Compounds, Elsevier Amsterdam, 2007. 

The metabolically important functions of the B12-derivatives are directly concerned either with enzymatically controlled organometallic reactions involving protein-bound adenosylcobamides (such as coenzyme B12, (3)), or methyl-Co ficorrinoids (such as methylcobalamin, (4)), or with enzyme-controlled redox reactions. Studies on the underlying biologically relevant organometallic chemistry of the Bi2-coenzymes in homogeneous (protic) solution, as well as the characterization of the enzymatic processes themselves have attracted considerable interest. 

The hallmark of any chemical transformation is the bond-breaking and bond-making that occur in reaction coordinate diagrams. One of the most important types of organometallic reactions involves C-H or C-C bond activation. We have already shown how C—H bonds can be activated through a combination of OA through a nonpolar agnostic intermediate, followed by RE. This process is reviewed in... 

Compared to other fundamental organometallic reactions involving transition metal complexes (e.g. oxidative addition), transmetalation reactions have been much less studied to the point that have even been considered simply as ligand substitutions. Recently, however, as a consequence of its participation in relevant catalytic processes (e.g. C-C cross-coupling reactions), they have started being more studied and, at present, are recognized as a differentiated process. A prove of its increasingly importance is the number of citations per year in scientific journals for transmetalation as topic (Fig. 1.7). 

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