Trifluoroacetic acid → HCID 178516401, compound

HRID 1407292Notes

Reaction equation

HRID 1407292 reaction equation
[C:1]1([C:7]2[C:11]([C:12]3[C:17](=[O:18])[CH:16]=[CH:15][N:14]([C:19]4[CH:24]=[CH:23][CH:22]=[C:21]([C:25]([F:28])([F:27])[F:26])[CH:20]=4)[N:13]=3)=[CH:10][N:9](C(C3C=CC=CC=3)(C3C=CC=CC=3)C3C=CC=CC=3)[N:8]=2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.C(O)(C(F)(F)F)=O.[OH-].[Na+]>C(Cl)Cl>[C:1]1([C:7]2[C:11]([C:12]3[C:17](=[O:18])[CH:16]=[CH:15][N:14]([C:19]4[CH:24]=[CH:23][CH:22]=[C:21]([C:25]([F:26])([F:27])[F:28])[CH:20]=4)[N:13]=3)=[CH:10][NH:9][N:8]=2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1

Participants

5

Reactant 3

HCID 6422Trifluoroacetic acidHCID 14798Sodium HydroxideHCID 58072499HCID 58072499, compound

Product 1

HCID 178516401HCID 178516401, compoundYield 82%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

A mixture of 3-(3-phenyl-1-trityl-1H-pyrazol-4-yl)-1-[3-(trifluoromethyl)phenyl]pyridazin-4(1H)-one (1.50 g, 2.4 mmol), TFA (5 mL), and CH2Cl2 (15 mL) was stirred overnight at room temperature. The reaction mixture was alkalinized with 1 M NaOH aqueous solution and extracted with AcOEt. The extract was washed with brine, dried over MgSO4, and concentrated under reduced pressure. The residue was recrystallized from MeOH to give the title compound (751 mg, 82% yield) as a white solid:

Workup

  1. extractionextracted with AcOEt
  2. washThe extract was washed with brine
  3. dry with materialdried over MgSO4
  4. concentrationconcentrated under reduced pressure
  5. customThe residue was recrystallized from MeOH

Sources & evidence

ORD record
ord-3d6c1194d22e41df9122793948d8da22
Source dataset
uspto-grants-2014_12
Patent number
US08916566B2

Reaction notes

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