Triethylamine → 5-Bromo-1-{(3SR,4RS)-3-(3,4-dichloro-phenyl)-4-[(3-fluoro-4-trifluoromethyl-benzyl)-methyl-amino]-pyrrolidin-1-yl}-pentan-1-one

HRID 910462Notes

Reaction equation

HRID 910462 reaction equation
[Br:1][CH2:2][CH2:3][CH2:4][CH2:5][C:6](Cl)=[O:7].[Cl:9][C:10]1[CH:11]=[C:12]([CH:17]2[CH2:21][NH:20][CH2:19][CH:18]2[N:22]([CH2:24][C:25]2[CH:30]=[CH:29][C:28]([C:31]([F:34])([F:33])[F:32])=[C:27]([F:35])[CH:26]=2)[CH3:23])[CH:13]=[CH:14][C:15]=1[Cl:16].C(N(CC)CC)C>C1COCC1>[Br:1][CH2:2][CH2:3][CH2:4][CH2:5][C:6]([N:20]1[CH2:19][CH:18]([N:22]([CH2:24][C:25]2[CH:30]=[CH:29][C:28]([C:31]([F:34])([F:32])[F:33])=[C:27]([F:35])[CH:26]=2)[CH3:23])[CH:17]([C:12]2[CH:13]=[CH:14][C:15]([Cl:16])=[C:10]([Cl:9])[CH:11]=2)[CH2:21]1)=[O:7]

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 5211735-Bromovaleryl chlorideHCID 75231672[(3RS,4SR)-4-(3,4-Dichloro-phenyl)-pyrrolidin-3-yl]-(3-fluoro-4-trifluoromethyl-benzyl)-methyl-amine

Product 1

HCID 722534755-Bromo-1-{(3SR,4RS)-3-(3,4-dichloro-phenyl)-4-[(3-fluoro-4-trifluoromethyl-benzyl)-methyl-amino]-pyrrolidin-1-yl}-pentan-1-oneYield 83.4%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent2×

Procedure

To a stirred solution of 5-bromo-pentanoyl chloride (0.167 ml, 1.25 mmol) in THF (10 ml) at RT was added over 1 hour a solution of [(3RS,4SR)-4-(3,4-dichloro-phenyl)-pyrrolidin-3-yl]-(3-fluoro-4-trifluoromethyl-benzyl)-methyl-amine (Intermediate VIII-1, 0.50 g, 1.19 mmol) and triethyl amine (0.18 ml, 1.30 mmol) in THF (5 mL). The reaction was stirred over night, quenched by addition of an aqueous solution of NaHCO3, and the product extracted with EtOAC. Purification by flash chromatography (SiO2, EtOAc/Hx 1:1) yielded 0.58 g (83%) of the title compound as a white solid. ES-MS m/e: 584.4 (M+H+).

Workup

  1. customquenched by addition of an aqueous solution of NaHCO3
  2. extractionthe product extracted with EtOAC
  3. customPurification by flash chromatography (SiO2, EtOAc/Hx 1:1)

Sources & evidence

ORD record
ord-2441e70b3b1b446f828576260dd66818
Source dataset
uspto-grants-2011_09
Patent number
US08022099B2

Reaction notes

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