potassium dihydrogenphosphate; Fremy’s salt in methanol; water; acetone 24 h; Title compound not separated from byproducts;

hydrogenchloride; potassium dihydrogenphosphate; Fremy’s salt 1.) H2O, acetone, MeOH, 24 h, 2.) H2O, acetone, MeOH, 5 h; Yield given. Multistep reaction;

in methanol T=20°C; 12 h;