Hydroxyamine hydrochloride → 3-(3-ethoxy-4-methoxyphenyl)-N-hydroxy-3-(1,3-dioxo-2,3-dihydro-1H-benzo[f]isoindol-2-yl)propionamide
Reaction equation
[CH2:1]([O:3][C:4]1[CH:5]=[C:6]([CH:12]([N:17]2[C:25](=[O:26])[C:24]3[CH:23]=[C:22]4[CH:27]=[CH:28][CH:29]=[CH:30][C:21]4=[CH:20][C:19]=3[C:18]2=[O:31])[CH2:13][C:14](O)=[O:15])[CH:7]=[CH:8][C:9]=1[O:10][CH3:11])[CH3:2].Cl.[NH2:33][OH:34]>O1CCCC1>[CH2:1]([O:3][C:4]1[CH:5]=[C:6]([CH:12]([N:17]2[C:25](=[O:26])[C:24]3[CH:23]=[C:22]4[CH:27]=[CH:28][CH:29]=[CH:30][C:21]4=[CH:20][C:19]=3[C:18]2=[O:31])[CH2:13][C:14]([NH:33][OH:34])=[O:15])[CH:7]=[CH:8][C:9]=1[O:10][CH3:11])[CH3:2]Participants
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Procedure
3-(3-Ethoxy-4-methoxyphenyl)-N-hydroxy-3-(1,3-dioxo-2,3-dihydro-1H-benzo[f]isoindol-2-yl)propionamide was prepared by the procedure of Example 1 from 3-(3-ethoxy-4-methoxyphenyl)-3-(1,3-dioxo-2,3-dihydro-1H-benzo[f]isoindol-2-yl)propanoic acid (2.00 g, 4.77 mmol), N,N′-carbonyldiimidazole (889 mg, 5.48 mmol) and hydroxylamine hydrochloride (419 mg, 6.03 mmol) in tetrahydrofuran (8 mL) to afford 3-(3-ethoxy-4-methoxyphenyl)-N-hydroxy-3-(1,3-dioxo-2,3-dihydro-1H-benzo[f]isoindol-2-yl)propionamide as an off-white solid (1.6 g, 77% yield): mp, 197.0-199.0° C.; 1H NMR (DMSO-d6) δ1.33 (t, J=7.0 Hz, 3H, CH3), 3.11-3.28 (m, 2H, CH2), 3.73 (s, 3H, CH3), 4.00 (q, J=7.0 Hz, 2H, CH2), 5.79 (t, J=7.8 Hz, 1H, NCH), 6.87-7.09 (m, 2H, Ar), 7.10 (br s, 1H, Ar), 7.74-7.78 (m, 2H, Ar), 8.23-8.27 (m, 2H, Ar), 8.49 (br s, 1H, Ar), 8.85 (br s, 1H, OH), 10.66 (br s, 1H, NH); 13C NMR (DMSO-d6) δ14.69, 34.27, 50.42, 55.45, 63.73, 111.73, 112.45, 119.82, 124.50, 127.04, 129.28, 130.26, 131.20, 135.05, 147.69, 148.58, 166.07, 167.30; Anal Calcd for C24H22N2O6: C, 66.35; H, 5.10; N, 6.45. Found: C, 66.22; H, 5.24; N, 6.08.
Sources & evidence
- ORD record
- ord-e5dae6d03a114d498a2ab6cad8a5e08d
- Source dataset
- uspto-grants-2001_04
- Patent number
- US06214857B1
Reaction notes
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