1: With sodium hydroxide in tetrahydrofuran; water T=40°C; 2: With sulfuric acid in tetrahydrofuran; water Heating / reflux; Product distribution / selectivity;

1: With sodium hydroxide in tetrahydrofuran; water T=40°C; 2: With sulfuric acid in tetrahydrofuran; water Heating / reflux; Product distribution / selectivity;

1: With water; potassium carbonate in toluene T=40 - 50°C; 0.5 h; 2: With sulfuric acid in tetrahydrofuran; water T=75°C; 18 - 32 h; Heating / reflux; Product distribution / selectivity;

potassium carbonate in methanol; water; toluene T=50 - 60°C; 1.25 - 1.75 h;