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Oiling the cogs- Practical tips, useful facts and resources: Organometallic highlight:

The generation of lithium-alkoxide based aryl and heteroaryl Grignard reagents by Mg-Br/Cl exchange in toluene- increased reactivity and wide applicability. Organomagnesium-based organometallics are used extensively in organic chemistry.[1] Historically the reagents were prepared by direct insertion of magnesium metal into organic halides. With demand for more industrially applicable methods, halogen-magnesium exchange using alkyl magnesium halides

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