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2-(Methylamino)ethanol → 2-(N-(2,6-dimethyl-4-pyridyl)-N-methylamino)ethanol

HRID 1384592
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Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 1384592
Cl[C:2]1[CH:7]=[C:6]([CH3:8])[N:5]=[C:4]([CH3:9])[CH:3]=1.[CH3:10][NH:11][CH2:12][CH2:13][OH:14]>Cl.O>[CH3:8][C:6]1[CH:7]=[C:2]([N:11]([CH2:12][CH2:13][OH:14])[CH3:10])[CH:3]=[C:4]([CH3:9])[N:5]=1
KomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

5

Edukt 2

HCID 80162-(Methylamino)ethanolHCID 5881754-Chloro-2,6-dimethylpyridine

Produkt 1

HCID 226250732-(N-(2,6-dimethyl-4-pyridyl)-N-methylamino)ethanolAusbeute 90 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 313Hydrochloric AcidKatalysatorHCID 962WaterLösungsmittel

Versuchsvorschrift

A solution of 4-chloro-2,6-dimethylpyridine (849 mg, 6 mmol), (J. Het. Chem. 1990, 1841), in 2-(methylamino)ethanol (1.35 g, 18 mmol) and 3M ethereal hydrogen chloride (3 drops) was heated at 140° C. for 1 hour. The reaction mixture was allowed to cool and was diluted with water. The insolubles were removed by filtration and the aqueous filtrate was poured onto a suspension of magnesium sulphate (50 g) in ethyl acetate (100 ml). The insolubles were removed by filtration and the filtrate dried (MgSO4) and the solvent removed by evaporation. The solid residue was triturated with ether, collected by filtration and dried under vacuum at 50° C. to give 2-(N-(2,6-dimethyl-4-pyridyl)-N-methylamino)ethanol (960 mg, 90%). m.p. 139-144° C. 1H NMR Spectrum: (CDCl3) 2.4(s, 6H); 3.0(s, 3H); 3.51(t, 2H); 3.81(t, 2H); 6.26(s, 2H) MS-ESI: 181 [MH]+

Aufarbeitung

  1. temperatureto cool
  2. customThe insolubles were removed by filtration
  3. additionthe aqueous filtrate was poured onto a suspension of magnesium sulphate (50 g) in ethyl acetate (100 ml)
  4. customThe insolubles were removed by filtration
  5. dry with materialthe filtrate dried (MgSO4)
  6. customthe solvent removed by evaporation
  7. customThe solid residue was triturated with ether
  8. filtrationcollected by filtration
  9. customdried under vacuum at 50° C.

Quellen und Nachweise

ORD-Eintrag
ord-b4d3e26ece064070b889e303009f23a4
Quelldatensatz
uspto-grants-2001_07
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US06258951B1

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