反应详情

温度

60 °C

2M aqueous NaOH (163 ml) was added to a solution of ethyl (4-cyclopropylsulfanylphenyl)oxoacetate (40.62 g, 162.5 mmol) in EtOH (200 ml) and the stirred mixture heated at 60° C. for 2 h. After cooling, the mixture was concentrated to 150 ml and washed with ether (2×100 ml). Sufficient concentrated HCl was then added to adjust the pH to 1 and the resulting precipitate was extracted into EtOAc (2×300 ml). The combined organic phases were washed with water (3×100 ml), brine (200 ml) and dried (MgSO4). Removal of the solvent afforded the title compound: m/z (ES−)=221.0 [M−H+]−.

1. temperatureAfter cooling
2. concentrationthe mixture was concentrated to 150 ml
3. washwashed with ether (2×100 ml)
4. additionSufficient concentrated HCl was then added
5. extractionthe resulting precipitate was extracted into EtOAc (2×300 ml)
6. washThe combined organic phases were washed with water (3×100 ml), brine (200 ml)
7. dry with materialdried (MgSO4)
8. customRemoval of the solvent