Tetrahydrofuran → 6-[2-[2-[4-(Diphenylmethyl)piperazino] ethoxy]ethoxy]-7-isopropyl[1,2,4]triazolo[1,5-b]pyridazine

HRID 1169055

Reaktionsgleichung

Reaktionsgleichung von HRID 1169055
[H-].[Na+].[C:3]1([CH:9]([C:22]2[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=2)[N:10]2[CH2:15][CH2:14][N:13]([CH2:16][CH2:17][O:18][CH:19](O)[CH3:20])[CH2:12][CH2:11]2)[CH:8]=[CH:7][CH:6]=[CH:5][CH:4]=1.Cl[C:29]1[C:30]([CH:38]([CH3:40])[CH3:39])=[CH:31][C:32]2[N:33]([N:35]=[CH:36][N:37]=2)[N:34]=1.[O:41]1CCCC1>>[C:22]1([CH:9]([C:3]2[CH:8]=[CH:7][CH:6]=[CH:5][CH:4]=2)[N:10]2[CH2:11][CH2:12][N:13]([CH2:16][CH2:17][O:18][CH2:19][CH2:20][O:41][C:29]3[C:30]([CH:38]([CH3:40])[CH3:39])=[CH:31][C:32]4[N:33]([N:35]=[CH:36][N:37]=4)[N:34]=3)[CH2:14][CH2:15]2)[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=1

Komponenten

5

Edukt 4

HCID 8028TetrahydrofuranHCID 24758Sodium hydrideHCID 229892276-Chloro-7-isopropyl[1,2,4]triazolo[1,5-b]pyridazineHCID 22989276[2-[4-(Diphenylmethyl)-1-piperazinyl]ethoxy]ethanol

Produkt 1

HCID 229892836-[2-[2-[4-(Diphenylmethyl)piperazino] ethoxy]ethoxy]-7-isopropyl[1,2,4]triazolo[1,5-b]pyridazine

Versuchsvorschrift

160 mg of 60% sodium hydride in oil was suspended in 20 ml of tetrahydrofuran; 1.20 g of [2-[4-(diphenylmethyl)-1-piperazinyl]ethoxy]ethanol was added, followed by heating and refluxing for 1 hour. After cooling, 610 mg of 6-chloro-7-isopropyl[1,2,4]triazolo[1,5-b]pyridazine was added, followed by heating and refluxing for 1 hour. After cooling, ice water was added, followed by extraction with ethyl acetate; the extract was washed with saturated saline, dried over magnesium sulfate and concentrated under reduced pressure. The residue was subjected to silica gel column chromatography and eluted with ethyl acetate:methanol (10:1). The desired fraction was collected; the crystal precipitated was collected by filtration, washed with ethyl ether and dried to yield 790 mg of the title compound.

Aufarbeitung

  1. temperatureby heating
  2. temperaturerefluxing for 1 hour
  3. temperatureAfter cooling
  4. temperatureby heating
  5. temperaturerefluxing for 1 hour
  6. temperatureAfter cooling
  7. extractionfollowed by extraction with ethyl acetate
  8. washthe extract was washed with saturated saline
  9. dry with materialdried over magnesium sulfate
  10. concentrationconcentrated under reduced pressure
  11. washeluted with ethyl acetate:methanol (10:1)
  12. customThe desired fraction was collected
  13. customthe crystal precipitated
  14. filtrationwas collected by filtration
  15. washwashed with ethyl ether
  16. customdried

Quellen und Nachweise

ORD-Eintrag
ord-41a91b692b9b4f7483139cf8bf2d04cd
Quelldatensatz
uspto-grants-2003_09
Patentnummer
US06627630B1

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