sodium hydroxide in water Dissolving aspirin at 0°C with NaOH (pH 8), addn. of soln. of Cu-compound.; Washing with water and acetone, drying, elem. anal.;

in ethanol; water aq. soln. of Cu acetate was added to aq. EtOH soln. of aspirin, mixt. was heated at 40°C; filtered off, washed with aq. EtOH, dried over CaCl2; elem. anal.;