Trifluoroacetic acid → 6-[(4-Fluorophenyl)oxy]-N-methyl-N-(4-{[(3S)-3-methyl-1-piperazinyl]methyl}phenyl)-3-pyridinecarboxamide

HRID 644766Notes

Reaction equation

HRID 644766 reaction equation
[F:1][C:2]1[CH:7]=[CH:6][C:5]([O:8][C:9]2[N:14]=[CH:13][C:12]([C:15]([N:17]([CH3:39])[C:18]3[CH:23]=[CH:22][C:21]([CH2:24][N:25]4[CH2:30][CH2:29][N:28](C(OC(C)(C)C)=O)[C@@H:27]([CH3:38])[CH2:26]4)=[CH:20][CH:19]=3)=[O:16])=[CH:11][CH:10]=2)=[CH:4][CH:3]=1.C(O)(C(F)(F)F)=O>C(Cl)Cl>[F:1][C:2]1[CH:7]=[CH:6][C:5]([O:8][C:9]2[N:14]=[CH:13][C:12]([C:15]([N:17]([CH3:39])[C:18]3[CH:23]=[CH:22][C:21]([CH2:24][N:25]4[CH2:30][CH2:29][NH:28][C@@H:27]([CH3:38])[CH2:26]4)=[CH:20][CH:19]=3)=[O:16])=[CH:11][CH:10]=2)=[CH:4][CH:3]=1

Participants

4

Reactant 2

HCID 6422Trifluoroacetic acidHCID 592621161,1-Dimethylethyl (2S)-4-({4-[({6-[(4-fluorophenyl)oxy]-3-pyridinyl}carbonyl) (methyl)amino]phenyl}methyl)-2-methyl-1-piperazinecarboxylate

Product 1

HCID 237290236-[(4-Fluorophenyl)oxy]-N-methyl-N-(4-{[(3S)-3-methyl-1-piperazinyl]methyl}phenyl)-3-pyridinecarboxamideYield 89.9%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

1,1-Dimethylethyl (2S)-4-({4-[({6-[(4-fluorophenyl)oxy]-3-pyridinyl}carbonyl)(methyl)amino]phenyl}methyl)-2-methyl-1-piperazinecarboxylate (D16) (0.518 g, 0.97 mmol) was dissolved in DCM (19.2 mL) and TFA (4.8 mL) added. The solution was stirred for 1.5 h then the solvent was removed in vacuo. The product was taken up in methanol and eluted through an SCX (10 g) column with 2M NH3 in methanol solution. The solvent was removed to give a colourless oil which was purified by column chromatography. Elution with a 0-5% (2M NH3 in methanol)/DCM gradient yielded the title compound as a colourless oil (0.379 g). δH (CDCl3, 400 MHz) 8.07 (1H, dd), 7.65 (1H, dd), 7.22 (2H, d), 7.04 (6H, m), 6.70 (1H, d), 3.48 (3H, s), 3.43 (2H, s), 3.13 (br.s), 2.95 (3H, m), 2.70 (2H, d), 2.04 (1H, m), 1.74 (1H, m), 1.05 (3H, d). MS (ES): MH+ 435.3.

Workup

  1. customthe solvent was removed in vacuo
  2. washeluted through an SCX (10 g) column with 2M NH3 in methanol solution
  3. customThe solvent was removed
  4. customto give a colourless oil which
  5. customwas purified by column chromatography
  6. washElution with a 0-5% (2M NH3 in methanol)/DCM gradient

Sources & evidence

ORD record
ord-f7c02d47cbaf4526b9bbd0557fd417d4
Source dataset
uspto-grants-2010_04
Patent number
US07700599B2

Reaction notes

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