ethyl [4-bromo-3-hydroxy-3-(6-hydroxy-2,3-dihydro-1-benzofuran-5-yl)-2-oxo-2,3-dihydro-1H-indol-1-yl]acetate → ethyl [4-bromo-3-(6-hydroxy-2,3-dihydro-1-benzofuran-5-yl)-2-oxo-2,3-dihydro-1H-indol-1-yl]acetate
Reaction equation
C1(CCN2C3C(=CC=CC=3)C(O)(C3C(O)=CC4OCOC=4C=3)C2=O)CC1.[Br:27][C:28]1[CH:36]=[CH:35][CH:34]=[C:33]2[C:29]=1[C:30](O)([C:44]1[C:45]([OH:53])=[CH:46][C:47]3[O:51][CH2:50][CH2:49][C:48]=3[CH:52]=1)[C:31](=[O:43])[N:32]2[CH2:37][C:38]([O:40][CH2:41][CH3:42])=[O:39]>>[Br:27][C:28]1[CH:36]=[CH:35][CH:34]=[C:33]2[C:29]=1[CH:30]([C:44]1[C:45]([OH:53])=[CH:46][C:47]3[O:51][CH2:50][CH2:49][C:48]=3[CH:52]=1)[C:31](=[O:43])[N:32]2[CH2:37][C:38]([O:40][CH2:41][CH3:42])=[O:39]Participants
3
Reactant 2
Product 1
Procedure
Following the procedure as described in PREPARATION 2C, and making non-critical variations to replace 1-(2-cyclopropylethyl)-3-hydroxy-3-(6-hydroxy-1,3-benzodioxol-5-yl)-1,3-dihydro-2H-indol-2-one with ethyl [4-bromo-3-hydroxy-3-(6-hydroxy-2,3-dihydro-1-benzofuran-5-yl)-2-oxo-2,3-dihydro-1H-indol-1-yl]acetate, the title compound was obtained (81%) as a white solid: 1H NMR (CDCl3, 300 MHz) δ 7.31-7.19 (m, 3H), 6.75 (d, 1H), 6.50-6.45 (m, 1H), 5.08 (s, 1H), 5.09-4.36 (m, 4H), 4.20 (q, 2H), 3.14-2.90 (m, 2H), 1.23 (t, 3H); MS (ES+) m/z 433.3 (M+1).
Sources & evidence
- ORD record
- ord-171909c9042b4d9981165369a75d4eb5
- Source dataset
- uspto-grants-2011_05
- Patent number
- US07935721B2
Reaction notes
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