Hydrochloric Acid → 1-Propanesulfonamide, 2,2-dimethyl-3-((1,2,4)triazolo(1,5-b)pyridazin-6-yloxy)-

HRID 274265

Reaction equation

HRID 274265 reaction equation
[H-].[Na+].[OH:3][CH2:4][C:5]([CH3:12])([CH3:11])[CH2:6][S:7]([NH2:10])(=[O:9])=[O:8].Cl[C:14]1[CH:15]=[CH:16][C:17]2[N:18]([N:20]=[CH:21][N:22]=2)[N:19]=1.Cl>CN(C)C=O.O>[CH3:11][C:5]([CH3:12])([CH2:6][S:7](=[O:9])(=[O:8])[NH2:10])[CH2:4][O:3][C:14]1[CH:15]=[CH:16][C:17]2[N:18]([N:20]=[CH:21][N:22]=2)[N:19]=1

Participants

7

Reactant 4

HCID 313Hydrochloric AcidHCID 24758Sodium hydrideHCID 103296873-Hydroxy-2,2-dimethylpropane-1-sulfonamideHCID 112406116-Chloro-(1,2,4)triazolo(1,5-b)pyridazine

Product 1

HCID 30737821-Propanesulfonamide, 2,2-dimethyl-3-((1,2,4)triazolo(1,5-b)pyridazin-6-yloxy)-Yield 81.3%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Procedure

In 15 ml of dimethylformamide was suspended 0.42 g of 60% sodium hydride in oil, followed by addition of 0.878 g of 3-hydroxy-2,2-dimethyl-1-propanesulfonamide and the mixture was stirred under reduced pressure at room temperature for 30 minutes. Then, 0.773 g of 6-chloro[1,2,4]triazolo[1,5-b]pyridazine was added and the mixture was further stirred at room temperature for 1 hour. Following addition of 40 ml of iced water, the reaction mixture was adjusted to pH 6 with 1N-hydrochloric acid and the resulting crystals were collected by filtration and washed with 20 ml of water and 20 ml of ethyl ether. The washed crystals were recrystallized from hot ethanol to provide 1.16 g of the title compound. m.p. 181°-184° C.

Workup

  1. stirringthe mixture was further stirred at room temperature for 1 hour
  2. filtrationthe resulting crystals were collected by filtration
  3. washwashed with 20 ml of water and 20 ml of ethyl ether
  4. customThe washed crystals were recrystallized from hot ethanol

Sources & evidence

ORD record
ord-6bbeb6dddcf6462faf560fd81a923fba
Source dataset
uspto-grants-1995_02
Patent number
US05389633

Linked notes

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