Dimethylamine → 1-[1-(4-Fluorophenethyl)piperidin-4-yl]-6-(2-pyrrolidon-1-yl)methylindole

HRID 1790523Notes

Reaction equation

HRID 1790523 reaction equation
[F:1][C:2]1[CH:31]=[CH:30][C:5]([CH2:6][CH2:7][N:8]2[CH2:13][CH2:12][CH:11]([N:14]3[C:22]4[C:17](=[CH:18][CH:19]=[C:20]([CH2:23][NH:24][C:25](=[O:29])[CH2:26][CH2:27]Br)[CH:21]=4)[CH:16]=[CH:15]3)[CH2:10][CH2:9]2)=[CH:4][CH:3]=1.[CH3:32]NC.O.C(OCC)(=O)C>O1CCCC1.C1(C)C=CC=CC=1>[F:1][C:2]1[CH:31]=[CH:30][C:5]([CH2:6][CH2:7][N:8]2[CH2:13][CH2:12][CH:11]([N:14]3[C:22]4[C:17](=[CH:18][CH:19]=[C:20]([CH2:23][N:24]5[CH2:32][CH2:27][CH2:26][C:25]5=[O:29])[CH:21]=4)[CH:16]=[CH:15]3)[CH2:10][CH2:9]2)=[CH:4][CH:3]=1

Participants

7

Reactant 4

HCID 674DimethylamineHCID 962WaterHCID 8857Ethyl AcetateHCID 220382021-[1-(4-Fluorophenethyl)piperidin-4-yl]-6-(3-bromopropionylamino)methylindole

Product 1

HCID 220379311-[1-(4-Fluorophenethyl)piperidin-4-yl]-6-(2-pyrrolidon-1-yl)methylindole

Reagents, catalysts & solvents 2

HCID 1140TolueneSolventHCID 8028TetrahydrofuranSolvent

Procedure

A mixture of 1-[1-(4-fluorophenethyl)piperidin-4-yl]-6-(3-bromopropionylamino)methylindole (150 mg) obtained in Example 377, a 2 M solution (5.0 ml) of dimethylamine in tetrahydrofuran and toluene (5 ml) was heated at 80 to 90° C. for 1.5 days. Then water and ethyl acetate were added to the reaction mixtures. The organic layer was separated, washed with brine, dried over anhydrous magnesium sulfate and concentrated under reduced pressure. The resulting residue was purified by Chromatorex NH-silica gel column chromatography (hexane/ethyl acetate system) to give the title compound (140 mg) as an oil. This oil was crystallized from ethyl acetate by using oxalic acid (28 mg) to give the oxalate (110 mg) of the title compound as a white powder (yield: 66%).

Workup

  1. customThe organic layer was separated
  2. washwashed with brine
  3. dry with materialdried over anhydrous magnesium sulfate
  4. concentrationconcentrated under reduced pressure
  5. customThe resulting residue was purified by Chromatorex NH-silica gel column chromatography (hexane/ethyl acetate system)

Sources & evidence

ORD record
ord-167e085545df4b919f7bdf06c1160f76
Source dataset
uspto-grants-2006_07
Patent number
US07071201B2

Reaction notes

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