Water → 6-(3-Methyl-5-phenyl-[1,2,4]triazole-1-yl)-pyridine-3-sulfonic acid amide

HRID 720716Notes

Reaction equation

HRID 720716 reaction equation
C(O[C:4](=[N:6][C:7](=O)[C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1)[CH3:5])C.[NH:15]([C:17]1[N:22]=[CH:21][C:20]([S:23]([NH2:26])(=[O:25])=[O:24])=[CH:19][CH:18]=1)[NH2:16].O>ClCCl.CO>[CH3:5][C:4]1[N:6]=[C:7]([C:8]2[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=2)[N:15]([C:17]2[N:22]=[CH:21][C:20]([S:23]([NH2:26])(=[O:24])=[O:25])=[CH:19][CH:18]=2)[N:16]=1

Participants

6

Reactant 3

HCID 962WaterHCID 120965906-Hydrazinylpyridine-3-sulfonamideHCID 13028604Ethyl (1E)-N-benzoylethanimidate

Product 1

HCID 98398796-(3-Methyl-5-phenyl-[1,2,4]triazole-1-yl)-pyridine-3-sulfonic acid amideYield 51%

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 6344DichloromethaneSolvent

Procedure

N-(1-ethoxy-ethylidene)-benzamide 400 mg (2.09 mmol) was dissolved in a mixed solvent of dichloromethane 20 ml and methanol 10 ml, and 6-hydrazinopyridine-3-sulfonic acid amide 433 mg (2.23 mmol) was added to the solution and stirred for 8 hours. After completing the reaction, water 20 ml was added to the reacting solution and extracted two times with dichloromethane, and then, the collected organic layer was washed with saturated brine. The organic layer was dried with anhydrous magnesium sulfate, filtered and concentrated under reduced pressure, and the resulting product was re-crystallized in acetone and hexane phase. As a result, 6-(3-methyl-5-phenyl-[1,2,4]triazole-1-yl)-pyridine-3-sulfonic acid amide (336 mg, yield: 51%) was obtained as a solid phase.

Workup

  1. additionwas added to the solution
  2. additionwas added to the reacting solution
  3. extractionextracted two times with dichloromethane
  4. washthe collected organic layer was washed with saturated brine
  5. dry with materialThe organic layer was dried with anhydrous magnesium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated under reduced pressure
  8. customthe resulting product was re-crystallized in acetone

Sources & evidence

ORD record
ord-c057939c297a4774a8e76fa573bc8561
Source dataset
uspto-grants-2006_11
Patent number
US07135572B2

Reaction notes

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