反应详情

A solution of (3R)-3-amino-3-(3-ethoxy-4-methoxy-phenyl)-propan-1-ol (1.1 g, 4.9 mmol), 2-bromomethyl-6-(cyclopropanecarbonyl-amino)-benzoic acid methyl ester (1.5 g, 4.8 mmol) and triethylamine (0.75 mL, 5.4 mmol) in DMF (10 mL) was heated at 100° C. for 18 hrs. The solvent was removed in vacuo. The residue was extracted with ethyl acetate (50 mL) and water (50 mL). The organic layer was washed with HCl (1N, 50 mL), brine (50 mL), and dried over MgSO4. The solvent was removed in vacuo to give an oil. The oil was stirred in ether (5 mL) and hexane (5 mL) to give a suspension. The suspension was filtered to give (1R)-cyclopropanecarboxylic acid {2-[1-(3-ethoxy-4-methoxy-phenyl)-3-hydroxy-propyl]-3-oxo-2,3-dihydro-1H-isoindol-4-yl}-amide as a white solid (1.3 g, 64% yield): mp, 103-105° C.; 1H NMR (CDCl3) δ 0.86-0.93 (m, 2H, CH2), 1.08-1.12 (m, 2H, CH2), 1.44 (t, J=7 Hz, 3H, CH3), 1.64-1.73 (m, 1H, CH), 2.11-2.32 (m, 2H, CH2), 3.37 (dd, J=4, 9 Hz, 1H, OH), 3.50-3.59 (m, 1H, CHH), 3.74-3.79 (m, 2H, NCHH, CHH), 3.80 (s, 3H, CH3), 4.06 (q, J=7 Hz, 2H, CH2), 4.16 (d, J=18 Hz, 1H, NCHH), 6.65 (dd, J=4, 11 Hz, 1H, NCH), 6.83-6.99 (m, 4H, Ar), 7.44 (t, J=8 Hz, 1H, Ar), 8.45 (d, J=8 Hz, 1H, Ar), 10.52 (s, 1H, NH); 13C NMR (CDCl3) 8.35, 14.77, 16.22, 33.85, 46.23, 50.52, 55.98, 58.59, 64.55, 111.36, 112.99, 116.77, 116.99, 117.83, 119.77, 130.73, 133.37, 138.05, 141.49, 148.62, 149.25, 170.33, 172.76; Anal Calcd for C24H28N2O5: C, 67.91; H, 6.65; N, 6.60. Found: C, 67.92; H, 6.67; N, 6.37.

1. customThe solvent was removed in vacuo
2. extractionThe residue was extracted with ethyl acetate (50 mL) and water (50 mL)
3. washThe organic layer was washed with HCl (1N, 50 mL), brine (50 mL)
4. dry with materialdried over MgSO4
5. customThe solvent was removed in vacuo
6. customto give an oil
7. filtrationThe suspension was filtered