sodium hydroxide in water; tert-butyl alcohol 3 h; Ambient temperature;

1: 74.5 percent / SOCl2 / -20 - 20 °C 3: 90 percent / aq. HCl / 10 h / Heating 4: 80 percent / aq. NaOH / 2-methyl-propan-2-ol; H2O / 3 h / Ambient temperature View Scheme

2: 90 percent / aq. HCl / 10 h / Heating 3: 80 percent / aq. NaOH / 2-methyl-propan-2-ol; H2O / 3 h / Ambient temperature View Scheme

1: 93 percent / aq. HCl / 18 h / Heating 2: 95 percent / aq. NaOH / 0 °C 3: 74.5 percent / SOCl2 / -20 - 20 °C 5: 90 percent / aq. HCl / 10 h / Heating 6: 80 percent / aq. NaOH / 2-methyl-propan-2-ol; H2O / 3 h / Ambient temperature View Scheme

1: 90 percent / aq. HCl / 10 h / Heating 2: 80 percent / aq. NaOH / 2-methyl-propan-2-ol; H2O / 3 h / Ambient temperature View Scheme

1: 1.) NaOEt / 1.) EtOH, 30 min, 2.) EtOH, reflux, 18 h 2: 93 percent / aq. HCl / 18 h / Heating 3: 95 percent / aq. NaOH / 0 °C 4: 74.5 percent / SOCl2 / -20 - 20 °C 6: 90 percent / aq. HCl / 10 h / Heating 7: 80 percent / aq. NaOH / 2-methyl-propan-2-ol; H2O / 3 h / Ambient temperature View Scheme