α-Diazo-β-hydroxyketones, obtained by condensation of aldehydes with 1-diazo-1-lithioacetone, are efficiently transformed into the corresponding β-diketones by exposure to rhodium(II) acetate. The sequence is applied to a new synthesis of β-damascone (10).
R. Pellicciari, R. Fringuelli, E. Sisani and M. Curini, J. Chem. Soc., Perkin Trans. 1, 1981, 2566 DOI: 10.1039/P19810002566
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