6533b7cffe1ef96bd1258cdd

RESEARCH PRODUCT

Nucleophilic benzoylation using lithiated methyl mandelate as a synthetic equivalent of the benzoyl carbanion. Oxidative decarboxylation of α-hydroxyacids

Gonzalo BlayIsabel FernándezBelen MonjePilar FormentinRafael RuizJosé R. Pedro

subject

chemistry.chemical_classificationDecarboxylationArylOrganic ChemistryAlkylationBiochemistryMedicinal chemistryUmpolungchemistry.chemical_compoundchemistryNucleophileDrug DiscoveryOxidative decarboxylationAlkylCarbanion

description

Abstract The synthesis of alkyl aryl ketones using lithiated methyl mandelate as a synthetic equivalent of the benzoyl carbanion is reported (Umpolung). The methodology involves alkylation of methyl mandelate, hydrolysis of the ester group and oxidative decarboxylation of the resulting α-hydroxyacids. The last step is carried out in a catalytic aerobic way using a Co(III) complex in the presence of pivalaldehyde under very mild and advantageous conditions. The procedure is also applied to methyl mandelates substituted on the aromatic ring.

https://doi.org/10.1016/s0040-4020(00)01097-8