3-Chloro-2-fluoro-1-propene → N-{(3RS,4SR)-4-(3,4-Dichloro-phenyl)-1-[1-(2-fluoro-allyl)-piperidine-4-carbonyl]-pyrrolidin-3-yl}-4-methoxy-N-methyl-3-trifluoromethyl-benzamide

HRID 1951135Notes

Reaction equation

HRID 1951135 reaction equation
[Cl:1][C:2]1[CH:3]=[C:4]([CH:9]2[CH2:13][N:12]([C:14]([CH:16]3[CH2:21][CH2:20][NH:19][CH2:18][CH2:17]3)=[O:15])[CH2:11][CH:10]2[N:22]([CH3:37])[C:23](=[O:36])[C:24]2[CH:29]=[CH:28][C:27]([O:30][CH3:31])=[C:26]([C:32]([F:35])([F:34])[F:33])[CH:25]=2)[CH:5]=[CH:6][C:7]=1[Cl:8].Cl[CH2:39][C:40]([F:42])=[CH2:41]>C1COCC1.C(OCC)(=O)C>[Cl:1][C:2]1[CH:3]=[C:4]([CH:9]2[CH2:13][N:12]([C:14]([CH:16]3[CH2:21][CH2:20][N:19]([CH2:41][C:40]([F:42])=[CH2:39])[CH2:18][CH2:17]3)=[O:15])[CH2:11][CH:10]2[N:22]([CH3:37])[C:23](=[O:36])[C:24]2[CH:29]=[CH:28][C:27]([O:30][CH3:31])=[C:26]([C:32]([F:33])([F:34])[F:35])[CH:25]=2)[CH:5]=[CH:6][C:7]=1[Cl:8]

Participants

5

Reactant 2

HCID 803203-Chloro-2-fluoro-1-propeneHCID 67025720N-[(3RS,4SR)-4-(3,4-dichloro-phenyl)-1-(piperidine-4-carbonyl)-pyrrolidin-3-yl]-4-methoxy-N-methyl-3-trifluoromethyl-benzamide

Product 1

HCID 75047520N-{(3RS,4SR)-4-(3,4-Dichloro-phenyl)-1-[1-(2-fluoro-allyl)-piperidine-4-carbonyl]-pyrrolidin-3-yl}-4-methoxy-N-methyl-3-trifluoromethyl-benzamideYield 47%

Reagents, catalysts & solvents 2

HCID 8028TetrahydrofuranSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a solution of N-[(3RS,4SR)-4-(3,4-dichloro-phenyl)-1-(piperidine-4-carbonyl)-pyrrolidin-3-yl]-4-methoxy-N-methyl-3-trifluoromethyl-benzamide (50 mg, 0.090 mmol) in THF (1 mL) was added under an atmosphere of nitrogen potassium bis(trimethylsilyl)amide (0.885 M in THF, 132 μL, 0.116 mmol). After stirring for 15 min at ambient temperature 3-chloro-2-fluoroprop-1-ene (13 mg, 0.13 mmol) was added and the reaction mixture was stirred for 20 h at this temperature. It was diluted with ethyl acetate (10 mL) and washed with an aqueous solution of sodium carbonate (1 M, 10 mL) and brine (10 mL). The aqueous layers were extracted with ethyl acetate (10 mL) and the combined organic layers dried over sodium sulfate. Purification by chromatography (SiO2, ethyl acetate:(ethyl acetate:triethylamine=95:5):methanol=100:0:0 to 0:90:10) afforded the title compound (26 mg, 47%) as a light brown foam. MS m/e: 616.4 [M]+.

Workup

  1. additionwas added
  2. washwashed with an aqueous solution of sodium carbonate (1 M, 10 mL) and brine (10 mL)
  3. extractionThe aqueous layers were extracted with ethyl acetate (10 mL)
  4. dry with materialthe combined organic layers dried over sodium sulfate
  5. customPurification by chromatography (SiO2, ethyl acetate:(ethyl acetate:triethylamine=95:5):methanol=100:0:0 to 0:90:10)

Sources & evidence

ORD record
ord-675ff178df944c7ca3dc46a5dac922e0
Source dataset
uspto-grants-2013_03
Patent number
US08404679B2

Reaction notes

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