Water → (2R)-1-[3,5-bis(trifluoromethyl)benzoyl]-2-(1H-indol-3-yl-methyl)-4-(3-phenylpropyl)piperazine

HRID 1379193

Reaction equation

HRID 1379193 reaction equation
[F:1][C:2]([F:32])([F:31])[C:3]1[CH:4]=[C:5]([CH:24]=[C:25]([C:27]([F:30])([F:29])[F:28])[CH:26]=1)[C:6]([N:8]1[CH2:13][CH2:12][NH:11][CH2:10][C@H:9]1[CH2:14][C:15]1[C:23]2[C:18](=[CH:19][CH:20]=[CH:21][CH:22]=2)[NH:17][CH:16]=1)=[O:7].Br[CH2:34][CH2:35][CH2:36][C:37]1[CH:42]=[CH:41][CH:40]=[CH:39][CH:38]=1.C(=O)([O-])[O-].[K+].[K+].O>CN(C)C=O.ClCCl>[F:30][C:27]([F:28])([F:29])[C:25]1[CH:24]=[C:5]([CH:4]=[C:3]([C:2]([F:1])([F:31])[F:32])[CH:26]=1)[C:6]([N:8]1[CH2:13][CH2:12][N:11]([CH2:34][CH2:35][CH2:36][C:37]2[CH:42]=[CH:41][CH:40]=[CH:39][CH:38]=2)[CH2:10][C@H:9]1[CH2:14][C:15]1[C:23]2[C:18](=[CH:19][CH:20]=[CH:21][CH:22]=2)[NH:17][CH:16]=1)=[O:7]

Participants

7

Reactant 4

HCID 962WaterHCID 11430Potassium Carbonate2×HCID 12503(3-Bromopropyl)benzene2×HCID 10972505(2R)-1-[3,5-bis(trifluoromethyl)benzoyl]-2-(1H-indol-3-ylmethyl)piperazine

Product 1

HCID 86751295(2R)-1-[3,5-bis(trifluoromethyl)benzoyl]-2-(1H-indol-3-yl-methyl)-4-(3-phenylpropyl)piperazineYield 79.4%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 6344DichloromethaneSolvent

Procedure

A mixture of (2R)-1-[3,5-bis(trifluoromethyl)benzoyl]-2-(1H-indol-3-yl-methyl)piperazine (0.17 g), 1-bromo-3-phenylpropane (0.08 g) and potassium carbonate (0.15 g) in dry dimethylformamide (10 ml) was stirred at room temperature under nitrogen atmosphere. After 2 hours, additional 1-bromo-3-phenylpropane (0.14 ml) and potassium carbonate (0.15 g) were added, and the mixture was stirred overnight. Water (50 ml) and dichloromethane (50 ml) were added to the mixture. The dichloromethane layer was washed with brine and dried over magnesium sulfate. After evaporation of the solvent, the residue was purified on a silica gel column (10 g) eluting with a mixture of toluene and ethyl acetate (4:1) to give (2R)-1-[3,5-bis(trifluoromethyl)benzoyl]-2-(1H-indol-3-yl-methyl)-4-(3-phenylpropyl)piperazine (0.17 g) as a syrup.

Workup

  1. stirringthe mixture was stirred overnight
  2. washThe dichloromethane layer was washed with brine
  3. dry with materialdried over magnesium sulfate
  4. customAfter evaporation of the solvent
  5. customthe residue was purified on a silica gel column (10 g)
  6. washeluting with a mixture of toluene and ethyl acetate (4:1)

Sources & evidence

ORD record
ord-c6fab44732b949439b676c24612572ed
Source dataset
uspto-grants-1997_09
Patent number
US05670505

Linked notes

Loading…