Water → HCID 70544649, Verbindung

HRID 1759249Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1759249
[H-].[Na+].[OH:3][C:4]1[C:5]([CH2:10][C:11]2[NH:12][CH:13]=[CH:14][N:15]=2)=[N:6][CH:7]=[CH:8][CH:9]=1.Br[CH2:17][C:18]1[CH:28]=[CH:27][C:21]([C:22]([O:24][CH2:25][CH3:26])=[O:23])=[CH:20][CH:19]=1.O>CN(C)C=O.C(OCC)C>[CH2:25]([O:24][C:22]([C:21]1[CH:20]=[CH:19][C:18]([CH2:17][O:3][C:4]2[C:5]([CH2:10][C:11]3[NH:15][CH:14]=[CH:13][N:12]=3)=[N:6][CH:7]=[CH:8][CH:9]=2)=[CH:28][CH:27]=1)=[O:23])[CH3:26]

Komponenten

7

Edukt 4

HCID 962WaterHCID 24758Sodium hydrideHCID 954261Ethyl 4-(bromomethyl)benzoateHCID 70545010HCID 70545010, Verbindung

Produkt 1

HCID 70544649HCID 70544649, VerbindungAusbeute 42 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 3283Diethyl EtherLösungsmittelHCID 6228DimethylformamideLösungsmittel2×

Versuchsvorschrift

Sodium hydride (1.81 g of 50% dispersion in mineral oil) was added in portions to a stirred solution of 3-hydroxy-2-(1-imidazolylmethyl)pyridine (6.00 g) in dry N,N-dimethylformamide (100 ml) at 0° C. The mixture was stirred for 15 minutes and a solution of ethyl 4-bromomethyl-benzoate (8.34 g) in dry N,N-dimethylformamide (20 ml) was then added over a period of 10 minutes. The mixture was allowed to warm to room temperature, stirred for 4 hours and water (5 ml) was then added. The solution was evaporated and the residue chromatographed on silica gel, eluting with chloroform. The product-containing fractions were combined and evaporated to give an oil which solidified on trituration with diethyl ether. Recrystallization from diethyl ether gave 3-(4-ethoxycarbonylbenzyloxy)-2-(1-imidazolylmethyl)pyridine (4.85 g), m.p. 100°-101° C.

Aufarbeitung

  1. stirringstirred for 4 hours
  2. customThe solution was evaporated
  3. customthe residue chromatographed on silica gel
  4. washeluting with chloroform
  5. customevaporated
  6. customto give an oil which
  7. customRecrystallization from diethyl ether

Quellen und Nachweise

ORD-Eintrag
ord-a41b42966c4f422b88544b910eb4db3b
Quelldatensatz
uspto-grants-1982_07
Patentnummer
US04339583

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