反应详情

温度

105 °C

(2-Methyl-4-mercapto-phenoxy)-acetic acid ethyl ester (6 g; 26.51 mmol), dibromo-phenol (8.68 g; 34.47 mmol), tris(dibenzylideneacetone)dipalladium (0) (0.97 g; 1.06 mmol), and 1,1′-bis-(diphenylphosphino)ferrocene (0.88 g; 1.59 mmol) were added to a dry reaction flask under an atmosphere of nitrogen. Triethylamine (10.73 mL, 106 mmol) and NMP (20 mL) were added, and the reaction mixture was stirred in a microwave oven for 1 h at 105° C. A 5% aqueous citric acid solution (150 mL) was added to the reaction mixture, which was extracted with ethyl acetate (4×100 mL). The pooled organic phases were washed twice with water (30 mL), dried and evaporated in vacuo. The crude reaction product was purified by flash chromatography (heptane:ethyl acetate (10:1→7:3). Yield 6.5 g. HPLC-MS: m/z: 397.3 (M+); Rt: 2.33 min.

1. extractionwas extracted with ethyl acetate (4×100 mL)
2. washThe pooled organic phases were washed twice with water (30 mL)
3. customdried
4. customevaporated in vacuo
5. customThe crude reaction product
6. customwas purified by flash chromatography (heptane:ethyl acetate (10:1→7:3)