in tetrahydrofuran byproducts: NH3; exclusion of air and water, stirred for 2 h; filtered (NaNO3), removal of solvent from filtrate, extn. (hexane), removal of solvent; elem. anal.;
in tetrahydrofuran byproducts: NH3; exclusion of air and water, stirred for 2 h; filtered (NaNO3), removal of solvent from filtrate, extn. (toluene), removal of solvent; elem. anal.;
in tetrahydrofuran byproducts: NH3; exclusion of air and water, stirred for 2 h; filtered (NaNO3), removal of solvent from filtrate, extn. (toluene), removal of solvent, extn. (THF), removal of solvent; elem. anal.;
in tetrahydrofuran byproducts: NH3; exclusion of air and water, stirred for 2 h; filtered (NaNO3), removal of solvent from filtrate, extn. (toluene), removal of solvent; elem. anal.;
in tetrahydrofuran byproducts: NH3; exclusion of air and water, stirred for 2 h; filtered (NaNO3), removal of solvent from filtrate, extn. (hexane), removal of solvent; elem. anal.;
in tetrahydrofuran byproducts: NH3; exclusion of air and water, stirred for 2 h; filtered (NaNO3), removal of solvent from filtrate, extn. (toluene), removal of solvent; elem. anal.;
in tert-butyl alcohol exclusion of air and water, stirred for 20 h in a water bath at 30-35°C; filtered (NaNO3), removal of solvent from filtrate, extn. (hexane), removal of solvent; elem. anal.;
