ethyl 2-(5-acetamido-3-(4-fluorophenyl)-4-(phenylethynyl)-1H-pyrazol-1-yl)acetate → 2-(5-amino-3-(4-fluorophenyl)-4-(phenylethynyl)-1H-pyrazol-1-yl)acetic acid

HRID 1775572Notes

Reaction equation

HRID 1775572 reaction equation
C([NH:4][C:5]1[N:9]([CH2:10][C:11]([O:13]CC)=[O:12])[N:8]=[C:7]([C:16]2[CH:21]=[CH:20][C:19]([F:22])=[CH:18][CH:17]=2)[C:6]=1[C:23]#[C:24][C:25]1[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=1)(=O)C>C(O)C.[OH-].[Na+]>[NH2:4][C:5]1[N:9]([CH2:10][C:11]([OH:13])=[O:12])[N:8]=[C:7]([C:16]2[CH:21]=[CH:20][C:19]([F:22])=[CH:18][CH:17]=2)[C:6]=1[C:23]#[C:24][C:25]1[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=1

Participants

4

Reactant 1

HCID 70982686ethyl 2-(5-acetamido-3-(4-fluorophenyl)-4-(phenylethynyl)-1H-pyrazol-1-yl)acetate

Product 1

HCID 709836262-(5-amino-3-(4-fluorophenyl)-4-(phenylethynyl)-1H-pyrazol-1-yl)acetic acidYield 103.6%

Reagents, catalysts & solvents 2

HCID 702EthanolSolventHCID 14798Sodium HydroxideSolvent

Procedure

A solution of ethyl 2-(5-acetamido-3-(4-fluorophenyl)-4-(phenylethynyl)-1H-pyrazol-1-yl)acetate (620 mg, 1.5 mmol) in ethanol (7 mL) and 25% NaOH (7 mL) was heated to 83° C. for 16 h. The resultant solid was filtered, washed with ethanol and water then dried in vacuo to give 2-(5-amino-3-(4-fluorophenyl)-4-(phenylethynyl)-1H-pyrazol-1-yl)acetic acid as a solid (521 mg), which was used as such in the subsequent step.

Workup

  1. filtrationThe resultant solid was filtered
  2. washwashed with ethanol and water
  3. customthen dried in vacuo

Sources & evidence

ORD record
ord-2ba306720b314a51b19aebe40d0e5085
Source dataset
uspto-grants-2016_02
Patent number
US09260381B2

Reaction notes

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