Hydrochloric Acid → HCID 72360079, compound

HRID 2103847Notes

Reaction equation

HRID 2103847 reaction equation
[CH2:1]([C:3]1[CH:8]=[CH:7][C:6]([C:9]2[N:13]([CH3:14])[N:12]=[C:11]([C:15](=[N:17][NH:18][C:19]([C:21]3[CH:30]=[CH:29][C:24]([C:25]([O:27]C)=[O:26])=[CH:23][CH:22]=3)=[O:20])[CH3:16])[C:10]=2[OH:31])=[CH:5][CH:4]=1)[CH3:2].CO.[OH-].[Na+].Cl>O>[CH2:1]([C:3]1[CH:8]=[CH:7][C:6]([C:9]2[N:13]([CH3:14])[N:12]=[C:11]([C:15](=[N:17][NH:18][C:19]([C:21]3[CH:22]=[CH:23][C:24]([C:25]([OH:27])=[O:26])=[CH:29][CH:30]=3)=[O:20])[CH3:16])[C:10]=2[OH:31])=[CH:5][CH:4]=1)[CH3:2]

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 887MethanolHCID 14798Sodium HydroxideHCID 86604744HCID 86604744, compound

Product 1

HCID 72360079HCID 72360079, compoundYield 42%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

To methyl 4-[(2-{1-[5-(4-ethylphenyl)-4-hydroxy-1-methyl-1H-pyrazol-3-yl]ethylidene}hydrazino)carbonyl]benzoate (0.172 mmol, 72.4 mg), methanol (4 mL) was added, and 1 M aqueous sodium hydroxide (5 eq., 0.861 mL) was added at room temperature. After 10 minutes of stirring at room temperature and 2 hours of stirring at 60° C., the reactor was cooled to room temperature, and 1 M hydrochloric acid (5 eq., 0.861 mL) and water were added. The precipitated solid was recovered by filtration, washed with water and dried by means of a vacuum pump, and the residue was further purified by silica gel thin layer chromatography (chloroform/methanol=10/1). After addition of chloroform/n-hexane, the precipitated solid was dried to give the desired product as a yellow solid (29.1 mg, yield 42%).

Workup

  1. stirringof stirring at 60° C.
  2. temperaturethe reactor was cooled to room temperature
  3. filtrationThe precipitated solid was recovered by filtration
  4. washwashed with water
  5. customdried by means of a vacuum pump
  6. customthe residue was further purified by silica gel thin layer chromatography (chloroform/methanol=10/1)
  7. additionAfter addition of chloroform/n-hexane
  8. customthe precipitated solid was dried

Sources & evidence

ORD record
ord-253bb84669ef460481e2373aabf5b0f3
Source dataset
uspto-grants-2009_08
Patent number
US07576115B2

Reaction notes

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