An example of an addition reaction involving aryl radicals is the Meerwein arylation.
2.
Chan Lam reaction has also been useful for selective transformations e . g . s-arylation
3.
In a general scope a Meerwein arylation is any reaction between an aryl radical and an alkene.
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Direct ?-arylation of saturated aldehydes and ketones can be effected through the combination of photoredox and organocatalytic methods.
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The development of this direct ?-arylation of aldehydes led to related reactions for the ?-functionalization of cyclic ketones.
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In particular, ?-arylation of cyclic ketones has been achieved under similar reaction conditions, but using azepane as the secondary amine cocatalyst.
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Alkylation and arylation of the phosphinimide complexes is possible through alkyllithium or Grignard reagents, giving products such as CpTi ( NPR 3 ) Me 2.
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Once again, alkylation and arylation are possible, along with substitution of Cl with other ligands such as SCH 2 Ph and N ( SiMe 3 ) 2.
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Additionally, a one-pot magnesium halogen exchange with subsequent arylation has been developed, showcasing the stability of the Weinreb Nahm amide and providing an operationally simple method for the synthesis of aryl ketones.
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In a more recent report from the same group, " ? "-arylcarbonyl compounds were found to be good substrates for the copper catalyzed " meta "-selective C-H arylation.
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