Cesium carbonate → Ethyl 2-(2-(4-Cyclopentyl-3-(trifluoromethyl)benzyloxy)-6,7,8,9-tetrahydropyrido[1,2-a]indol-9-yl)acetate

HRID 515744Notes

Reaction equation

HRID 515744 reaction equation
[OH:1][C:2]1[CH:3]=[C:4]2[C:8](=[CH:9][CH:10]=1)[N:7]1[CH2:11][CH2:12][CH2:13][CH:14]([CH2:15][C:16]([O:18][CH2:19][CH3:20])=[O:17])[C:6]1=[CH:5]2.C(=O)([O-])[O-].[Cs+].[Cs+].Cl[CH2:28][C:29]1[CH:34]=[CH:33][C:32]([CH:35]2[CH2:39][CH2:38][CH2:37][CH2:36]2)=[C:31]([C:40]([F:43])([F:42])[F:41])[CH:30]=1>CN(C=O)C>[CH:35]1([C:32]2[CH:33]=[CH:34][C:29]([CH2:28][O:1][C:2]3[CH:3]=[C:4]4[C:8](=[CH:9][CH:10]=3)[N:7]3[CH2:11][CH2:12][CH2:13][CH:14]([CH2:15][C:16]([O:18][CH2:19][CH3:20])=[O:17])[C:6]3=[CH:5]4)=[CH:30][C:31]=2[C:40]([F:41])([F:42])[F:43])[CH2:36][CH2:37][CH2:38][CH2:39]1

Participants

5

Reactant 3

HCID 10796Cesium carbonateHCID 534026024-(Chloromethyl)-1-cyclopentyl-2-(trifluoromethyl)benzeneHCID 67249257Ethyl 2-(2-hydroxy-6,7,8,9-tetrahydropyrido[1,2-a]indol-9-yl)acetate

Product 1

HCID 67249393Ethyl 2-(2-(4-Cyclopentyl-3-(trifluoromethyl)benzyloxy)-6,7,8,9-tetrahydropyrido[1,2-a]indol-9-yl)acetateYield 73.2%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
75 °C

Procedure

To a mixture of ethyl 2-(2-hydroxy-6,7,8,9-tetrahydropyrido[1,2-a]indol-9-yl)acetate (107 mg, 0.391 mmol) and cesium carbonate (191 mg, 0.587 mmol) in DMF (2 mL)was added 4-(chloromethyl)-1-cyclopentyl-2-(trifluoromethyl)benzene (123 mg, 0.47 mmol). The reaction was heated at 75° C. for 5 h and cooled down. The solid was filtered and washed with ethyl acetate. The combined solvent was evaporated, and the residue was purified by silica gel column chromatography to give the title compound (143 mg). LCMS m/z=500.4 [M+H]+; 1H NMR (400 MHz, CDCl3) δ ppm 1.32 (t, J=7.1 Hz, 3H), 1.52-1.67 (m, 3H), 1.68-1.80 (m, 2H), 1.80-1.92 (m, 2H), 2.00-2.24 (m, 5H), 2.55 (dd, J=15.6 and 8.7 Hz, 1H), 2.95 (dd, J=15.6 and 5.4 Hz, 1H), 3.35-3.45 (m, 1H), 3.45-3.55 (m, 1H), 3.83-3.92 (m, 1H), 4.10-4.18 (m, 1H), 4.23 (q, J=7.1 Hz, 2H), 5.10 (s, 2H), 6.19 (s, 1H), 6.90 (dd, J=8.8 and 2.4 Hz, 1H), 7.10 (d, J=2.4 Hz, 1H), 7.17 (d, J=8.8 Hz, 1H), 7.48 (d, J=8.1 Hz, 1H), 7.60 (dd, J=8.1 and 1.3 Hz, 1H), 7.71 (d, J=1.4 Hz, 1H).

Workup

  1. temperaturecooled down
  2. filtrationThe solid was filtered
  3. washwashed with ethyl acetate
  4. customThe combined solvent was evaporated
  5. customthe residue was purified by silica gel column chromatography

Sources & evidence

ORD record
ord-a0b263f6f58144458b64f63d8a9b8b69
Source dataset
uspto-grants-2015_08
Patent number
US09108969B2

Reaction notes

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