Water → 6-Ethoxy-[1,2,4]triazolo[4,3-b]pyridazin-3-ylamine

HRID 532320Notes

Reaction equation

HRID 532320 reaction equation
Cl[C:2]1[CH:3]=[CH:4][C:5]2[N:6]([C:8]([NH2:11])=[N:9][N:10]=2)[N:7]=1.[O-:12][CH2:13][CH3:14].[Na+].O>C(O)C>[CH2:13]([O:12][C:2]1[CH:3]=[CH:4][C:5]2[N:6]([C:8]([NH2:11])=[N:9][N:10]=2)[N:7]=1)[CH3:14]

Participants

5

Reactant 3

HCID 962WaterHCID 2723922Sodium ethoxideHCID 151078816-Chloro-[1,2,4]triazolo[4,3-b]pyridazin-3-amine

Product 1

HCID 581368256-Ethoxy-[1,2,4]triazolo[4,3-b]pyridazin-3-ylamineYield 108.9%

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Conditions

Temperature
55 °C

Procedure

6-Chloro-[1,2,4]triazolo[4,3-b]pyridazin-3-ylamine (W2.001a, 616 mg) was dissolved in absolute ethanol (40 ml) and admixed with portions of solid sodium ethoxide (990 mg). After stirring at 55° C. for 2 h, water was added and the aqueous phase was extracted three times with dichloromethane. The combined extracts were dried over sodium sulfate, filtered and concentrated. 709 mg of crude product of the desired compound were obtained in sufficient purity.

Workup

  1. extractionthe aqueous phase was extracted three times with dichloromethane
  2. dry with materialThe combined extracts were dried over sodium sulfate
  3. filtrationfiltered
  4. concentrationconcentrated

Sources & evidence

ORD record
ord-e43c904d8a0b4683ba322d9cd38f8127
Source dataset
uspto-grants-2014_10
Patent number
US08853206B2

Reaction notes

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