Dimethylformamide → 4-{[(2-{1-[5-(3,4-dichlorophenyl)-4-hydroxy-1-methyl-1H-pyrazol-3-yl]ethylidene}hydrazino)carbonothioyl]amino}benzoic acid

HRID 2103821Notes

Reaction equation

HRID 2103821 reaction equation
[Cl:1][C:2]1[CH:3]=[C:4]([C:9]2[N:13]([CH3:14])[N:12]=[C:11]([C:15](=O)[CH3:16])[C:10]=2[OH:18])[CH:5]=[CH:6][C:7]=1[Cl:8].[NH:19]([C:21]([NH:23][C:24]1[CH:32]=[CH:31][C:27]([C:28]([OH:30])=[O:29])=[CH:26][CH:25]=1)=[S:22])[NH2:20].CN(C)C=O>Cl.O>[Cl:1][C:2]1[CH:3]=[C:4]([C:9]2[N:13]([CH3:14])[N:12]=[C:11]([C:15](=[N:20][NH:19][C:21]([NH:23][C:24]3[CH:32]=[CH:31][C:27]([C:28]([OH:30])=[O:29])=[CH:26][CH:25]=3)=[S:22])[CH3:16])[C:10]=2[OH:18])[CH:5]=[CH:6][C:7]=1[Cl:8]

Participants

6

Reactant 3

HCID 6228DimethylformamideHCID 27573784-(4-Carboxyphenyl)-3-thiosemicarbazideHCID 602067801-[5-(3,4-dichlorophenyl)-4-hydroxy-1-methyl-1H-pyrazol-3-yl]ethanone

Product 1

HCID 727535294-{[(2-{1-[5-(3,4-dichlorophenyl)-4-hydroxy-1-methyl-1H-pyrazol-3-yl]ethylidene}hydrazino)carbonothioyl]amino}benzoic acidYield 59.4%

Reagents, catalysts & solvents 2

HCID 313Hydrochloric AcidCatalystHCID 962WaterSolvent

Procedure

1-[5-(3,4-Dichlorophenyl)-4-hydroxy-1-methyl-1H-pyrazol-3-yl]ethanone (0.139 mmol, 39.7 mg) synthesized in Synthetic Example 1 and 4-hydrazinocarbonothioylaminobenzoic acid (0.139 mmol, 29.4 mg) were stirred with dimethylformamide (4 mL) and two drops of concentrated hydrochloric acid at room temperature for 22 hours. After addition of water, the precipitated yellow solid was recovered by filtration, washed with water and dried by means of a vacuum pump. The resulting solid was stirred with chloroform/n-hexane for a while, then recovered by filtration and dried by means of a vacuum pump to give the desired product as a yellow solid (39.5 mg, yield 59%).

Workup

  1. filtrationthe precipitated yellow solid was recovered by filtration
  2. washwashed with water
  3. customdried by means of a vacuum pump
  4. filtrationrecovered by filtration
  5. customdried by means of a vacuum pump

Sources & evidence

ORD record
ord-734ed5bce2294938a0fe5a70c39d9fc9
Source dataset
uspto-grants-2009_08
Patent number
US07576115B2

Reaction notes

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