potassium carbonate in acetone 2.5 h; Heating;

1: 58.5 percent / imidazole, trifluoroacetic anhydride / trifluoroacetic acid / 18 h / Heating 2: 65 percent / KOH, hydrazine hydrate / bis-(2-hydroxy-ethyl) ether / 2 h / Heating 3: 85 percent / K2CO3 / acetone / 2.5 h / Heating View Scheme

1: 65 percent / KOH, hydrazine hydrate / bis-(2-hydroxy-ethyl) ether / 2 h / Heating 2: 85 percent / K2CO3 / acetone / 2.5 h / Heating View Scheme

1: 61 percent / Br2, thallium(III)acetate sesquihydrate / CCl4 / 0.5 h / Heating 2: 65 percent / KOH, hydrazine hydrate / bis-(2-hydroxy-ethyl) ether / 2 h / Heating 3: 85 percent / K2CO3 / acetone / 2.5 h / Heating View Scheme

1: 58.5 percent / imidazole, trifluoroacetic anhydride / trifluoroacetic acid / 18 h / Heating 2: 65 percent / KOH, hydrazine hydrate / bis-(2-hydroxy-ethyl) ether / 2 h / Heating 3: 85 percent / K2CO3 / acetone / 2.5 h / Heating View Scheme