sodium carbonate 3 h; Ambient temperature;

1: 68 percent / aluminium chloride / CH2Cl2 / 22 h / Ambient temperature 2: 63 percent / 20percent aq. Na2CO3 / 3 h / Ambient temperature View Scheme

1: 89 percent / sodium borohydride, 2 M NaOH / ethanol; H2O / Ambient temperature 2: 73 percent / conc. sulphuric acid / toluene / 24 h / Heating 3: 68 percent / aluminium chloride / CH2Cl2 / 22 h / Ambient temperature 4: 63 percent / 20percent aq. Na2CO3 / 3 h / Ambient temperature View Scheme

1: 73 percent / conc. sulphuric acid / toluene / 24 h / Heating 2: 68 percent / aluminium chloride / CH2Cl2 / 22 h / Ambient temperature 3: 63 percent / 20percent aq. Na2CO3 / 3 h / Ambient temperature View Scheme