Sodium hydride → HCID 22989380, compound

HRID 1067514Notes

Reaction equation

HRID 1067514 reaction equation
[H-].[Na+].[C:3]1([CH:9]([C:23]2[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=2)[N:10]2[CH2:15][CH2:14][N:13]([CH2:16][CH2:17][CH2:18][CH2:19][CH2:20][CH2:21][OH:22])[CH2:12][CH2:11]2)[CH:8]=[CH:7][CH:6]=[CH:5][CH:4]=1.[Cl:29][C:30]1[C:31]([CH3:39])=[CH:32][C:33]2[N:34]([N:36]=[CH:37][N:38]=2)[N:35]=1>O1CCCC1>[ClH:29].[ClH:29].[C:3]1([CH:9]([C:23]2[CH:24]=[CH:25][CH:26]=[CH:27][CH:28]=2)[N:10]2[CH2:11][CH2:12][N:13]([CH2:16][CH2:17][CH2:18][CH2:19][CH2:20][CH2:21][O:22][C:30]3[C:31]([CH3:39])=[CH:32][C:33]4[N:34]([N:36]=[CH:37][N:38]=4)[N:35]=3)[CH2:14][CH2:15]2)[CH:4]=[CH:5][CH:6]=[CH:7][CH:8]=1

Participants

5

Reactant 3

HCID 24758Sodium hydrideHCID 118051586-Chloro-7-methyl-[1,2,4]triazolo[1,5-b]pyridazineHCID 22989220HCID 22989220, compound

Product 1

HCID 22989380HCID 22989380, compoundYield 145.7%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

210 mg of 60% sodium hydride in oil was suspended in 15 ml of tetrahydrofuran; 0.91 g of 4-(diphenylmethyl)-1-piperazinehexanol was added, followed by heating and refluxing for 1 hour. After cooling, 440 mg of 6-chloro-7-methyl[1,2,4]triazolo[1,5-b]pyridazine was added, followed by heating and refluxing for 3 hours. After cooling, ice water was added, followed by extraction with ethyl acetate; the extract was washed with saturated saline and dried with magnesium sulfate. After the dry product was concentrated under reduced pressure, the residue was subjected to silica gel column chromatography and eluted with dichloromethane-ethyl acetate-methanol (10:10:1). The desired fraction was collected and dissolved in 5 ml of ethyl acetate; 1.44 ml of a 4 N hydrogen chloride solution in ethyl acetate was added; the crystal precipitated was collected by filtration, washed with ethyl ether and dried to yield 1.06 g of the title compound, which was then recrystallized from ethanol.

Workup

  1. temperatureby heating
  2. temperaturerefluxing for 1 hour
  3. temperatureAfter cooling
  4. temperatureby heating
  5. temperaturerefluxing for 3 hours
  6. temperatureAfter cooling
  7. extractionfollowed by extraction with ethyl acetate
  8. washthe extract was washed with saturated saline
  9. dry with materialdried with magnesium sulfate
  10. concentrationAfter the dry product was concentrated under reduced pressure
  11. washeluted with dichloromethane-ethyl acetate-methanol (10:10:1)
  12. customThe desired fraction was collected
  13. dissolutiondissolved in 5 ml of ethyl acetate
  14. addition1.44 ml of a 4 N hydrogen chloride solution in ethyl acetate was added
  15. customthe crystal precipitated
  16. filtrationwas collected by filtration
  17. washwashed with ethyl ether
  18. customdried

Sources & evidence

ORD record
ord-5a27d4620f914c449e6327ba404951e2
Source dataset
uspto-grants-2001_06
Patent number
US06248740B1

Reaction notes

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