Organomagnesium compounds, reaction exchange

Reactions of organomagnesium compounds with sulfoxides often result in ligand exchange [31], and may be complicated by a- or ortho metallation. However, in some cases, notably with 2-pyridyl aryl sulfoxides, reactions with arylmagnesium halides give useful yields of products from displacement of the aryl sulfoxido group [32, 33], e.g. [32]... 

Although in most cases reactions of organomagnesium compounds with sulfoxides give mixtures resulting from ligand exchange and/or deprotonation, examples have recently been described where... 

There are several useful means for preparation of organomercury compounds. The general metal-metal exchange reaction between mercury(II) salts and organolithium or organomagnesium compounds is applicable. The oxymercuration reaction discussed in Section 4.3 provides a means of acquiring certain functionalized... 

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