Water → HCID 68782158, Verbindung

HRID 2262981Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2262981
Cl[C:2]1[S:6][N:5]=[C:4]([C:7]2[CH:12]=[CH:11][CH:10]=[CH:9][N:8]=2)[N:3]=1.[C:13]([O:17][C:18]([N:20]1[CH2:25][CH2:24][NH:23][CH2:22][CH2:21]1)=[O:19])([CH3:16])([CH3:15])[CH3:14].C(N(CC)CC)C.O>CN(C)C=O>[N:8]1[CH:9]=[CH:10][CH:11]=[CH:12][C:7]=1[C:4]1[N:3]=[C:2]([N:23]2[CH2:22][CH2:21][N:20]([C:18]([O:17][C:13]([CH3:16])([CH3:15])[CH3:14])=[O:19])[CH2:25][CH2:24]2)[S:6][N:5]=1

Komponenten

6

Edukt 4

HCID 962WaterHCID 8471TriethylamineHCID 143452tert-Butyl piperazine-1-carboxylateHCID 463184652-(5-Chloro-[1,2,4]thiadiazol-3-yl)-pyridine

Produkt 1

HCID 68782158HCID 68782158, VerbindungAusbeute 91,4 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel

Versuchsvorschrift

To a solution of 2-(5-chloro-1,2,4-thiadiazol-3-yl)pyridine (3.96 g, 20.0 mmol) and 1-tert-butoxycarbonyl-piperazine (3.73 g, 20.0 mmol) in dimethylformamide (40 ml) was added triethylamine (11.2 ml, 80.0 mmol), and the mixture was stirred at room temperature for 1 hour. Water was poured to the reaction mixture, and the resulting solution was extracted with ethyl acetate. The extract was washed with water and dried over anhydrous magnesium sulfate, and the solvent was distilled off under reduced pressure. The residue was purified by silica gel column chromatography (hexane:ethyl acetate=1:1) to give 6.35 g (91.2%) of tert-butyl 4-(3-pyridin-2-yl-1,2,4-thiadiazol-5-yl)piperazine-1-carboxylate as a solid.

Aufarbeitung

  1. extractionthe resulting solution was extracted with ethyl acetate
  2. washThe extract was washed with water
  3. dry with materialdried over anhydrous magnesium sulfate
  4. distillationthe solvent was distilled off under reduced pressure
  5. customThe residue was purified by silica gel column chromatography (hexane:ethyl acetate=1:1)

Quellen und Nachweise

ORD-Eintrag
ord-9d515546783041fba99c006f728c06bc
Quelldatensatz
uspto-grants-2010_12
Patentnummer
US07851473B2

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