2-(Chloromethyl)-4-methoxypyridine hydrochloride → 4-Fluoro-2-[[(4-methoxy-2-pyridinyl)methyl]thio]-1H-benzimidazole

HRID 1756610Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1756610
[F:1][C:2]1[C:10]2[N:9]=[C:8]([SH:11])[NH:7][C:6]=2[CH:5]=[CH:4][CH:3]=1.Cl.[CH3:13][O:14][C:15]1[CH:20]=[CH:19][N:18]=[C:17]([CH2:21]Cl)[CH:16]=1>O.CO>[F:1][C:2]1[C:10]2[N:9]=[C:8]([S:11][CH2:21][C:17]3[CH:16]=[C:15]([O:14][CH3:13])[CH:20]=[CH:19][N:18]=3)[NH:7][C:6]=2[CH:5]=[CH:4][CH:3]=1

Komponenten

5

Edukt 2

HCID 139233682-(Chloromethyl)-4-methoxypyridine hydrochlorideHCID 178505573HCID 178505573, Verbindung

Produkt 1

HCID 156624884-Fluoro-2-[[(4-methoxy-2-pyridinyl)methyl]thio]-1H-benzimidazole

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 887MethanolLösungsmittel2×HCID 962WaterLösungsmittel

Versuchsvorschrift

To a solution of 4-fluoro-2-mercapto-1H-benzimidazole (1.15 g, 0.0068 mol) in methanol (60 ml) NaOH (0.54 g, 0.014 mol) dissolved in water (3 ml) and 4-methoxy-2-chloromethylpyridine hydrochloride (1.32 g, 0.0068 mol) dissolved in methanol (20 ml) were added in the given order. The mixture was refluxed for one hour whereupon the solution was evaporated. The residue was partitioned between methylene chloride and water. After separation the organic solution was dried over MgSO4 and evaporated giving an oil which was purified on silica gel (50 g) using 1% methanol in methylene chloride as eluent. In this way the title compound was obtained (1.35 g, 69%). NMR data for the product is given below.

Aufarbeitung

  1. additionwere added in the given order
  2. temperatureThe mixture was refluxed for one hour whereupon the solution
  3. customwas evaporated
  4. customThe residue was partitioned between methylene chloride and water
  5. customAfter separation the organic solution
  6. dry with materialwas dried over MgSO4
  7. customevaporated
  8. customgiving an oil which
  9. customwas purified on silica gel (50 g)

Quellen und Nachweise

ORD-Eintrag
ord-2ce8850fd0c5429984b9f6fac259b628
Quelldatensatz
uspto-grants-1995_08
Patentnummer
US05441968

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