potassium carbonate in acetone 4 h; Heating;

1: 80 percent / sodium bicarbonate / acetone / 1 h / Ambient temperature 2: 50 percent / ethanol / 8 h / Heating 3: 35 percent / K2CO3 / acetone / 4 h / Heating View Scheme

1: 50 percent / ethanol / 8 h / Heating 2: 35 percent / K2CO3 / acetone / 4 h / Heating View Scheme