1: 65 percent / aluminium chloride / CS2 / 12 h / Heating 2: 84 percent / benzene; acetone / 72 h / 20 °C 3: 34 percent / pyridine / 1.5 h / Heating 4: 83 percent / sodium hydrogen carbonate / ethanol; H2O / 2 h / Heating View Scheme

alkaline hydrolysis;