6533b859fe1ef96bd12b80bb

RESEARCH PRODUCT

ChemInform Abstract: Nucleophilic Benzoylation Using Lithiated Methyl Mandelate as a Synthetic Equivalent of the Benzoyl Carbanion. Oxidative Decarboxylation of α-Hydroxyacids.

Belen MonjeGonzalo BlayJosé R. PedroPilar FormentinRafael RuizIsabel Fernández

subject

chemistry.chemical_classificationchemistry.chemical_compoundNucleophileChemistryArylOrganic chemistryGeneral MedicineAlkylationAlkylOxidative decarboxylationUmpolungCatalysisCarbanion

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/10.1002/chin.200123076