反应详情

温度

80 °C

To a solution of 7-(allyl-methanesulfonyl-amino)-heptanoic acid ethyl ester (250 mg, 0.86 mmol), 1-acetyloxy-3-iodo-benzene (225 mg, 0.86 mmol), and triethylamine (139 mL, 1 mmol) in DMF (3 mL) was added palladium acetate (25 mg). The reaction was heated to 80° C. under nitrogen for 24 h. The mixture was cooled to room temperature and aqueous sodium thiosulfate and CH2Cl2 were added. The aqueous solution was extracted with CH2Cl2 (2×) and the combined organic layers were washed with water (1×) and brine (1×). The organic solution was dried with MgSO4, filtered, and concentrated in vacuo. The product was purified by radial chromatography (hexanes to 25% EtOAc/hexanes) to afford the title compound of Step A (95 mg). 1H NMR (CDCl3 400 MHz) δ 6.88–7.34 (m, 4H), 6.53–6.60 (m, 1H), 6.13–6.20 (m, 1H), 4.10 (q, 2H), 3.95 (d, 2H), 3.17–3.21 (m, 2H), 2.85 (s, 3H), 2.24–2.31 (m, 2H), 2.31 (s, 3H), 1.56–1.62 (m, 4H), 1.27–1.33 (m, 4H), 1.23 (t, 3H).

1. temperatureThe mixture was cooled to room temperature
2. extractionThe aqueous solution was extracted with CH2Cl2 (2×)
3. washthe combined organic layers were washed with water (1×) and brine (1×)
4. dry with materialThe organic solution was dried with MgSO4
5. filtrationfiltered
6. concentrationconcentrated in vacuo
7. customThe product was purified by radial chromatography (hexanes to 25% EtOAc/hexanes)