5,6,7,8-Tetrahydro-2-naphthol → ethyl [3-hydroxy-3-(3-hydroxy-5,6,7,8-tetrahydronaphthalen-2-yl)-2-oxo-2,3-dihydro-1H-indol-1-yl]acetate
Reaction equation
BrC1C=CC=C2C=1C(=O)C(=O)N2CCCCC.[O:18]=[C:19]1[C:27](=[O:28])[C:26]2[C:21](=[CH:22][CH:23]=[CH:24][CH:25]=2)[N:20]1[CH2:29][C:30]([O:32][CH2:33][CH3:34])=[O:31].O1C2C=CC(O)=CC=2OC1.[CH:45]1[C:54]2[CH2:53][CH2:52][CH2:51][CH2:50][C:49]=2[CH:48]=[CH:47][C:46]=1[OH:55]>>[OH:28][C:27]1([C:47]2[C:46]([OH:55])=[CH:45][C:54]3[CH2:53][CH2:52][CH2:51][CH2:50][C:49]=3[CH:48]=2)[C:26]2[C:21](=[CH:22][CH:23]=[CH:24][CH:25]=2)[N:20]([CH2:29][C:30]([O:32][CH2:33][CH3:34])=[O:31])[C:19]1=[O:18]Participants
5
Procedure
Following the procedure as described in PREPARATION 1C, and making non-critical variations to replace 4-bromo-1-pentyl-1H-indole-2,3-dione with ethyl (2,3-dioxo-2,3-dihydro-1H-indol-1-yl)acetate, and 1,3-benzodioxol-5-ol with 5,6,7,8-tetrahydronapthalen-2-ol, the title compound was obtained (81%): 1H NMR (300 MHz, CDCl3) δ 8.61 (s, 1H), 7.54 (dd, 1H), 7.38 (td, 1H), 7.20 (t, 1H), 6.80 (d, 1H), 6.76 (s, 1H), 6.50 (s, 1H), 4.45 (ABq, 2H), 4.21 (q, 2H), 4.18-4.14 (br, 1H), 2.73-2.47 (m, 4H), 1.77-1.63 (m, 4H), 1.24 (t, 3H); MS (ES+) m/z 364 (M−17), 404 (M+23)
Sources & evidence
- ORD record
- ord-f228f974606d4c69927a5f0574a2087a
- Source dataset
- uspto-grants-2011_05
- Patent number
- US07935721B2
Reaction notes
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