Trifluoroacetic acid → HCID 178489758, compound

HRID 16767Notes

Reaction equation

HRID 16767 reaction equation
FC(F)(F)C(O)=O.[CH3:8][O:9][C:10]1[CH:11]=[C:12]([CH:37]=[C:38]([O:40][CH3:41])[CH:39]=1)[CH2:13][CH2:14][C:15]1[CH:19]=[C:18]([NH:20][C:21](=[O:29])[C:22]2[CH:27]=[CH:26][C:25]([I:28])=[CH:24][CH:23]=2)[N:17](C(OC(C)(C)C)=O)[N:16]=1>C(Cl)Cl>[CH3:8][O:9][C:10]1[CH:11]=[C:12]([CH2:13][CH2:14][C:15]2[CH:19]=[C:18]([NH:20][C:21](=[O:29])[C:22]3[CH:23]=[CH:24][C:25]([I:28])=[CH:26][CH:27]=3)[NH:17][N:16]=2)[CH:37]=[C:38]([O:40][CH3:41])[CH:39]=1

Participants

4

Reactant 2

HCID 6422Trifluoroacetic acidHCID 66589816HCID 66589816, compound

Product 1

HCID 178489758HCID 178489758, compoundYield 24.3%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

Trifluoroacetic acid (3.85 mL, 50.02 mmol) was added in one portion to tert-butyl 3-(3,5-dimethoxyphenethyl)-5-(4-iodobenzamido)-1H-pyrazole-1-carboxylate (288 mg, 0.5 mmol) in DCM (10 mL) at room temperature. The resulting solution was stirred for 24 h. The reaction mixture was evaporated to dryness and redissolved in MeOH (5 mL). The crude product was purified by ion exchange chromatography, using a SCX column. The desired product was eluted from the column using 3.5M NH3/Methanol and pure fractions were evaporated to dryness to afford a tan solid. The solid was triturated with DCM to give the title compound (58.0 mg, 24.3%) as a white solid; 1H NMR (399.9 MHz, DMSO-d6) δ 2.88 (4H, s), 3.73 (6H, s), 6.33 (1H, t), 6.42 (2H, d), 6.47 (1H, s), 7.77 (2H, d), 7.87 (2H, d), 10.73 (1H, s), 12.17 (1H, s).

Workup

  1. customThe reaction mixture was evaporated to dryness
  2. dissolutionredissolved in MeOH (5 mL)
  3. customThe crude product was purified by ion exchange chromatography
  4. washThe desired product was eluted from the column
  5. customwere evaporated to dryness
  6. customto afford a tan solid
  7. customThe solid was triturated with DCM

Sources & evidence

ORD record
ord-1bc2561b7bf44355a570b3c2bac9b33b
Source dataset
uspto-grants-2010_06
Patent number
US07737149B2

Reaction notes

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