Water → HCID 15595675, compound

HRID 329633Notes

Reaction equation

HRID 329633 reaction equation
[CH3:1][C:2]1[N:6]2[N:7]=[C:8]([C:11]3[CH:12]=[C:13]([NH:17][C:18](=[O:20])[CH3:19])[CH:14]=[CH:15][CH:16]=3)[CH:9]=[CH:10][C:5]2=[N:4][N:3]=1.[H-].[Na+].[CH2:23](Br)[C:24]#[CH:25].O>CN(C)C=O>[CH3:1][C:2]1[N:6]2[N:7]=[C:8]([C:11]3[CH:12]=[C:13]([N:17]([CH2:25][C:24]#[CH:23])[C:18](=[O:20])[CH3:19])[CH:14]=[CH:15][CH:16]=3)[CH:9]=[CH:10][C:5]2=[N:4][N:3]=1

Participants

6

Reactant 4

HCID 962WaterHCID 7842Propargyl bromideHCID 24758Sodium hydrideHCID 7532415N-(3-(3-methyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)phenyl)acetamide

Product 1

HCID 15595675HCID 15595675, compound

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To 3.0 g of N-[3-(3-methyl-1,2,4-triazolo[4,3-b]pyridazin-6-yl)phenyl]acetamide in 250 ml of dimethylformamide under argon was added 0.6 g of sodium hydride (50% in oil). The mixture was stirred for one hour, then 1.38 ml of propargyl bromide was added. This mixture was stirred for 12 hours then poured into 200 ml of water and extracted with 150 ml portions of dichloromethane. The extracts were combined, dried and evaporated in vacuo. The residue was chromatographed on 300 g of silica gel with dichloromethane-methanol (97:3) as the eluent. Fractions containing the desired product were collected, evaporated in vacuo and recrystallized from dichloromethanhexane to give 2.5 g of orange crystals mp 195°-198° C.

Workup

  1. stirringThis mixture was stirred for 12 hours
  2. extractionextracted with 150 ml portions of dichloromethane
  3. customdried
  4. customevaporated in vacuo
  5. customThe residue was chromatographed on 300 g of silica gel with dichloromethane-methanol (97:3) as the eluent
  6. additionFractions containing the desired product
  7. customwere collected
  8. customevaporated in vacuo
  9. customrecrystallized from dichloromethanhexane

Sources & evidence

ORD record
ord-42fd47cb8af74d2cb566df0a09e9edb3
Source dataset
uspto-grants-1990_01
Patent number
US04892873

Reaction notes

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