этилацетат----(Ca(OH)2, H20, t)---->X1---->ацетон---->X2----(H2SO4, t=180)--->X3----(KMnO4,H2O)----->пропандиол-1,2

1) 2H3C-C(O)-O-C2H5 + Ca(OH)2 (+T,H2O) = Ca(CH3COO)2 (X1) + 2C2H5OH;

2) Ca(CH3COO)2 (+T) = CaCO3 + CH3-C(O)-CH3 (ацетон);

3) CH3-C(O)-CH3 + H2 (+T, Cu(CrO2)2/Ni(CrO2)2) = CH3-CH(OH)-CH3 (X2);

4) CH3-CH(OH)-CH3 (180 C, +H2SO4) = H2C=CH-CH3 (X3) + H2O;

5) 3H2C=CH-CH3 + 2KMnO4 + 4H2O = 3H2C(OH)-CH(OH)-CH3 (пропандиол-1,2) + 2KOH + 2MnO2.