Modern magnesium organic chemie

Organomagnesium reagents can be employed for a variety of useful transformations, which are also of relevance for industrial processes. Recent protocols for syntheses of highly functionalized Grignard reagents highlight fascinating new perspectives for organic synthesis. Particularly, the addition of superstoichiometric amounts of LiCl allowed for the preparation of organomagnesium compounds, employing holoarenes or arenes at very mild reaction conditions. These highly functionalized Grignard reagents can be used as starting materials for transition metal-catalyzed cross-coupling reactions. New developments in the ligand design resulted in highly active palladium and nickel catalysts for efficient transformations of inexpensive chlorides or tosylates, as well as challenging fluorides. Economically attractive iron-catalyzed coupling reactions of organomagnesium reagents bear great potential for further developments.