Mild air-oxidation of 1,3-dicarbonyl compounds with cesium salts: Novel α-hydroxylation accompanied by partial hydrolysis of malonate derivatives

Article abstract of DOI:10.1016/S0040-4039(99)01618-4

1,3-Dicarbonyl compounds (1) were efficiently oxygenated at the α-position with cesium salts, such as CsF or Cs₂CO₃ (0.1 Meq) in DMF at room temperature. Reaction of malonate derivatives (1a, b) with excess amount (2 Meq) of Cs₂