Hydrochloric Acid → 4-{[(2-{1-[5-(4-t-Butylphenyl)-4-hydroxy-3-thienyl]ethylidene}hydrazino)carbonothioyl]amino}benzoic acid

HRID 2103867Notes

Reaction equation

HRID 2103867 reaction equation
[C:1]([C:5]1[CH:10]=[CH:9][C:8]([C:11]2[S:12][CH:13]=[C:14]([C:17]([CH3:19])=O)[C:15]=2[OH:16])=[CH:7][CH:6]=1)([CH3:4])([CH3:3])[CH3:2].[NH:20]([C:22]([NH:24][C:25]1[CH:33]=[CH:32][C:28]([C:29]([OH:31])=[O:30])=[CH:27][CH:26]=1)=[S:23])[NH2:21].Cl>CN(C)C=O>[C:1]([C:5]1[CH:10]=[CH:9][C:8]([C:11]2[S:12][CH:13]=[C:14]([C:17](=[N:21][NH:20][C:22]([NH:24][C:25]3[CH:33]=[CH:32][C:28]([C:29]([OH:31])=[O:30])=[CH:27][CH:26]=3)=[S:23])[CH3:19])[C:15]=2[OH:16])=[CH:7][CH:6]=1)([CH3:4])([CH3:3])[CH3:2]

Participants

5

Reactant 3

HCID 313Hydrochloric AcidHCID 27573784-(4-Carboxyphenyl)-3-thiosemicarbazideHCID 442072892-(4-t-Butylphenyl)-3-hydroxy-4-methylcarbonylthiophene

Product 1

HCID 723599494-{[(2-{1-[5-(4-t-Butylphenyl)-4-hydroxy-3-thienyl]ethylidene}hydrazino)carbonothioyl]amino}benzoic acidYield 52.5%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

2-(4-t-Butylphenyl)-3-hydroxy-4-methylcarbonylthiophene (31 mg, 0.11 mmol) synthesized in Reference Synthetic Example 33 and 4-hydrazinocarbonothioylaminobenzoic acid (23 mg, 0.11 mmol) were stirred with dimethylformamide (1.1 mL) and concentrated hydrochloric acid (0.05 mL) at room temperature for 30 hours. The reaction solution was partitioned between ethyl acetate and water, and the organic layer was washed with saturated aqueous sodium chloride and dried over anhydrous sodium sulfate. The resulting organic layer was concentrated and purified by silica gel column chromatography (chloroform) to give the desired product as a light brown solid (27 mg, yield 52%).

Workup

  1. customThe reaction solution was partitioned between ethyl acetate and water
  2. washthe organic layer was washed with saturated aqueous sodium chloride
  3. dry with materialdried over anhydrous sodium sulfate
  4. concentrationThe resulting organic layer was concentrated
  5. custompurified by silica gel column chromatography (chloroform)

Sources & evidence

ORD record
ord-ae585716129643e790bbbaa787a84d56
Source dataset
uspto-grants-2009_08
Patent number
US07576115B2

Reaction notes

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