反应详情

Dissolve 2-(carboethoxy)-2-(4-methoxybenzylthio)propane (1.05 g, 3.91 mmol)in a mixture of 95% ethanol (18 mL), water (9 mL) and tetrahydrofuran (10 mL). Add potassium hydroxide (1.4 g, 25 mmol) and stir at room temperaturefor 2 hours then at 55° C. for 1 hour. Evaporate the solvent in vacuo and partition between water (50 mL) and ether (50 mL). Acidify to pH1 with concentrated hydrochloric acid and extract into methylene chloride (50 mL). Dry (Na2SO4) and evaporate the solvent in vacuo to give 2-(carboxy)-2-(4-methoxybenzylthio)propane as a tan solid (763 mg).

1. customEvaporate the solvent in vacuo
2. custompartition between water (50 mL) and ether (50 mL)
3. extractionAcidify to pH1 with concentrated hydrochloric acid and extract into methylene chloride (50 mL)
4. dry with materialDry (Na2SO4)
5. customevaporate the solvent in vacuo