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6-Chloro-7-cyclobutyl-3-phenyl-1,2,4-triazolo[4,3-b]pyridazine → N-(7-Cyclobutyl-3-phenyl-1,2,4-triazolo[4,3-b]pyridazin-6-yl)-N-(1-methyl-1H-1,2,4-triazol-3-ylmethyl)amine

HRID 277329
Notes
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Reaction equation

HRID 277329 reaction equation
Cl[C:2]1[C:3]([CH:17]2[CH2:20][CH2:19][CH2:18]2)=[CH:4][C:5]2[N:6]([C:8]([C:11]3[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=3)=[N:9][N:10]=2)[N:7]=1.Cl.[CH3:22][N:23]1[CH:27]=[N:26][C:25]([CH2:28][NH2:29])=[N:24]1>C(N(CC)CC)C.CN(C=O)C>[CH:17]1([C:3]2[C:2]([NH:29][CH2:28][C:25]3[N:26]=[CH:27][N:23]([CH3:22])[N:24]=3)=[N:7][N:6]3[C:8]([C:11]4[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=4)=[N:9][N:10]=[C:5]3[CH:4]=2)[CH2:20][CH2:19][CH2:18]1
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 2

HCID 110005936-Chloro-7-cyclobutyl-3-phenyl-1,2,4-triazolo[4,3-b]pyridazineHCID 18314526(1-methyl-1H-1,2,4-triazol-3-yl)methanamine hydrochloride

Product 1

HCID 9841820N-(7-Cyclobutyl-3-phenyl-1,2,4-triazolo[4,3-b]pyridazin-6-yl)-N-(1-methyl-1H-1,2,4-triazol-3-ylmethyl)amine

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolvent
HCID 8471
Triethylamine
Solvent

Conditions

Temperature
100 °C

Procedure

A mixture of 6-chloro-7-cyclobutyl-3-phenyl-1,2,4-triazolo[4,3-b]pyridazine (144 mg, 0.52 mmol) and C-(1-methyl-1H-1,2,4-triazol-3-yl)methylamine hydrochloride (300 mg, 2.0 mmol) in triethylamine (1 ml) and dry DMF (1 ml) was stirred and heated at 100° C. in a sealed tube for 20 hours. Upon cooling the volatiles were removed in vacuo, and the residue was partitioned between dichloromethane and saturated aqueous sodium hydrogen carbonate. The aqueous was further extracted with dichloromethane (x2). The combined extracts were dried (Na2SO4), filtered and evaporated. The residue was purified by chromatograhy on silica gel, eluting with 2%→5%→10% methanol-dichloromethane to give, in order of elution:

Workup

  1. temperatureUpon cooling the volatiles
  2. customwere removed in vacuo
  3. customthe residue was partitioned between dichloromethane and saturated aqueous sodium hydrogen carbonate
  4. extractionThe aqueous was further extracted with dichloromethane (x2)
  5. dry with materialThe combined extracts were dried (Na2SO4)
  6. filtrationfiltered
  7. customevaporated
  8. customThe residue was purified by chromatograhy on silica gel
  9. washeluting with 2%→5%→10% methanol-dichloromethane
  10. customto give, in order of elution

Sources & evidence

ORD record
ord-5d6990ded6be4a6689857b1bd2ee51ae
Source dataset
uspto-grants-2002_03
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US06355798B1

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes