in water T=20°C;

in acetonitrile Electrolysis; 6.5 h, initial voltage 40 V; mixture was filtered, solvent removed at 60°C in vacuo, solids were collected, washed with diethyl ether, dried at 110°C; elem.anal.;

in water stirring (reflux, 6 h); filtration, washing (Et2O), evapn. of the aq. phase to dryness, grounding in a pestle and mortar, drying in vacuo over P2O5, drying in vacuo at 160°C for 4 h; elem. anal.;

propionic anhydride in propionic acid byproducts: acetic acid; dissolution of acetate in EtCOOH, distn. of acetic acid, addn. of propionic anhydride, refluxing (30 min.); removal of EtCOOH (distn.), acetone addn., pptn., filtration, drying (vac.); elem. anal.;

sodium hydroxide in not given pptn. with NaOH, washing the ppt., treating with organic acid;