反应详情

Add ethyldimethylaminopropylcarbodiimide hydrochloride (2.47 g, 12.9 mmol) to a solution of 1-[4-(3-amino-benzyloxy)-2-hydroxy-3-propyl-phenyl]-ethanone (1.54 g, 5.14 mmol) and methyl hydrogen isophthalate (1.11 g, 6.17 mmol) in dichloromethane (40 mL) at 0° C. Add triethylamine (3.59 mL, 25.7 mmol) and stir at room temperature for 72 hours. At 5 hours, add additional methyl hydrogen isophthalate (200 mg). Stir overnight. Wash the mixture twice with 2N hydrochloric acid, saturated sodium bicarbonate, brine, dry, and concentrate. Triturate the residue with 1:1 hexanes: dichloromethane, and filter to afford the title compound as an off-white powder (1.83 g, 77%): 1H NMR (CDCl3) δ 0.97 (t, 3H), 1.59 (sextet, 2H), 2.56 (s, 3H), 2.72 (t, 2H), 3.98 (s, 3H), 5.20 (s, 2H), 6.49 (d, 1H), 7.25 (m, 1H), 7.42 (t, 1H), 7.56-7.64 (m, 3H), 7.79 (s, 1H), 7.89 (s, 1H), 8.15 (d, 1H), 8.24 (d, 1H), 8.48 (s, 1H), 12.75 (s, 1H).

1. washWash the mixture twice with 2N hydrochloric acid, saturated sodium bicarbonate, brine
2. customdry
3. concentrationconcentrate
4. customTriturate the residue with 1:1 hexanes
5. filtrationdichloromethane, and filter