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Cesium carbonate → Ethyl 2-(7-(4-(Cyclohexylmethyl)-3-(trifluoromethyl)benzyloxy)-1,2,3,4-tetrahydrocyclopenta[b]indol-3-yl)acetate

HRID 2274070
Notes
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Reaction equation

HRID 2274070 reaction equation
[OH:1][C:2]1[CH:10]=[CH:9][C:8]2[NH:7][C:6]3[CH:11]([CH2:14][C:15]([O:17][CH2:18][CH3:19])=[O:16])[CH2:12][CH2:13][C:5]=3[C:4]=2[CH:3]=1.C(=O)([O-])[O-].[Cs+].[Cs+].Br[CH2:27][C:28]1[CH:33]=[CH:32][C:31]([CH2:34][CH:35]2[CH2:40][CH2:39][CH2:38][CH2:37][CH2:36]2)=[C:30]([C:41]([F:44])([F:43])[F:42])[CH:29]=1>CN(C=O)C>[CH:35]1([CH2:34][C:31]2[CH:32]=[CH:33][C:28]([CH2:27][O:1][C:2]3[CH:10]=[CH:9][C:8]4[NH:7][C:6]5[CH:11]([CH2:14][C:15]([O:17][CH2:18][CH3:19])=[O:16])[CH2:12][CH2:13][C:5]=5[C:4]=4[CH:3]=3)=[CH:29][C:30]=2[C:41]([F:42])([F:43])[F:44])[CH2:36][CH2:37][CH2:38][CH2:39][CH2:40]1
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 3

HCID 10796Cesium carbonateHCID 53345675Ethyl 2-(7-hydroxy-1,2,3,4-tetrahydrocyclopenta[b]indol-3-yl)acetateHCID 672108914-(Bromomethyl)-1-(cyclohexylmethyl)-2-(trifluoromethyl)benzene

Product 1

HCID 67211498Ethyl 2-(7-(4-(Cyclohexylmethyl)-3-(trifluoromethyl)benzyloxy)-1,2,3,4-tetrahydrocyclopenta[b]indol-3-yl)acetateYield 51.9%

Reagents, catalysts & solvents 1

HCID 6228
Dimethylformamide
Solvent

Procedure

To a stirred reaction mixture of ethyl 2-(7-hydroxy-1,2,3,4-tetrahydrocyclopenta[b]indol-3-yl)acetate (40 mg, 0.15 mmol) and cesium carbonate (75 mg, 0.23 mmol) in DMF (1 mL) was added 4-(bromomethyl)-1-(cyclohexylmethyl)-2-(trifluoromethyl)benzene (78 mg, 0.23 mmol). The reaction mixture was stirred at room temperature for 1 h. The solid was filtered and washed with ethyl acetate. The combined filtrate was concentrated, and the residue was purified by preparative TLC to give the title compound (40 mg) as an oil. LCMS m/z=514.5 [M+H]+. 1H NMR (400 MHz, CDCl3) δ 0.96-1.06 (m, 2H), 1.14-1.22 (m, 3H), 1.30 (t, J=7.2 Hz, 3H), 1.55-1.72 (m, 6H), 2.07-2.15 (m, 1H), 2.50 (dd, J=16.7 and 11.2 Hz, 1H), 2.66 (d, J=6.8 Hz, 2H), 2.70-2.86 (m, 4H), 3.52-3.58 (m, 1H), 4.18-4.25 (m, 2H), 5.08 (s, 2H), 6.85 (dd, J=8.8 and 2.4 Hz, 1H), 7.00 (d, J=2.4 Hz, 1H), 7.21 (d, J=8.8 Hz, 1H), 7.31 (d, J=7.9 Hz and 1.6 Hz, 1H), 7.55 (d, J=7.8 Hz, 1H), 7.72 (d, J=1.6 Hz, 1H), 8.46 (s, 1H).

Workup

  1. filtrationThe solid was filtered
  2. washwashed with ethyl acetate
  3. concentrationThe combined filtrate was concentrated
  4. customthe residue was purified by preparative TLC

Sources & evidence

ORD record
ord-9f2189eb1602489e93909a619400ee4c
Source dataset
uspto-grants-2015_09
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US09126932B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes