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Potassium Carbonate → Butyl 6-[N-(5-bromo-2-cyclopropylmethoxybenzyl)-N-ethylamino]pyridazine-3-carboxylate

HRID 840306
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 840306
[Br:1][C:2]1[CH:3]=[CH:4][C:5]([OH:25])=[C:6]([CH:24]=1)[CH2:7][N:8]([C:11]1[N:16]=[N:15][C:14]([C:17]([O:19][CH2:20][CH2:21][CH2:22][CH3:23])=[O:18])=[CH:13][CH:12]=1)[CH2:9][CH3:10].Br[CH2:27][CH:28]1[CH2:30][CH2:29]1.C(=O)([O-])[O-].[K+].[K+]>CN(C=O)C>[Br:1][C:2]1[CH:3]=[CH:4][C:5]([O:25][CH2:27][CH:28]2[CH2:30][CH2:29]2)=[C:6]([CH:24]=1)[CH2:7][N:8]([C:11]1[N:16]=[N:15][C:14]([C:17]([O:19][CH2:20][CH2:21][CH2:22][CH3:23])=[O:18])=[CH:13][CH:12]=1)[CH2:9][CH3:10]
KomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

5

Edukt 3

HCID 11430Potassium CarbonateHCID 81503BromomethylcyclopropaneHCID 22622486butyl 6-[N-(5-bromo-2-hydroxybenzyl)-N-ethylamino]pyridazine-3-carboxylate

Produkt 1

HCID 22622526Butyl 6-[N-(5-bromo-2-cyclopropylmethoxybenzyl)-N-ethylamino]pyridazine-3-carboxylateAusbeute 94 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228
Dimethylformamide
Lösungsmittel

Versuchsvorschrift

A solution of n-butyl 6-[N-(5-bromo-2-hydroxybenzyl)-N-ethylamino]pyridazine-3-carboxylate (reference example 3) (0.286 g, 0.69 mmol) in DMF (3.5 ml) was treated with bromomethylcyclopropane (0.1 g, 0.78 mmol) and potassium carbonate (0.473 g, 3.4 mmol). The reaction was allowed to stir at ambient temperature for 60 hours. The solvent was evaporated at reduced pressure (vacuum pump) and the residue partitioned between ethyl acetate and water. The aqueous layer was extracted with ethyl acetate (2×10 ml). The organic layers were combined dried (MgSO4) and evaporated. The residue was purified by chromatography (eluant: ethyl acetate/hexane) to give the title compound as a pale yellow oil (0.3 g, 94%).

Aufarbeitung

  1. customThe solvent was evaporated at reduced pressure (vacuum pump)
  2. customthe residue partitioned between ethyl acetate and water
  3. extractionThe aqueous layer was extracted with ethyl acetate (2×10 ml)
  4. dry with materialThe organic layers were combined dried (MgSO4)
  5. customevaporated
  6. customThe residue was purified by chromatography (eluant: ethyl acetate/hexane)

Quellen und Nachweise

ORD-Eintrag
ord-c544195f912746329dcded2cec30e8f5
Quelldatensatz
uspto-grants-2002_04
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US06365603B1

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