NaH in acetone byproducts: Ag, H2O; bubbling NH3 through a soln. of silver salt in acetone, stirring for 30 min, concn., addn. of Et2O, filtration, recrystn. (CH2Cl2/Et2O 1:15 vol.), mixing with NaH under N2, addn. of CH2Cl2, stirring for 75 min; filtration through Celite, concn., addn. of Et2O, filtration, air drying; elem. anal.;

in acetone byproducts: diacetonamine; stirring for 4 d;

in acetone refluxing in acetone;

in acetone refluxing in acetone;