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tert-Butyl {1-[2-(6-chloro-1-oxido-3-oxo-1,2,4-benzotriazin-4(3H)-yl)ethyl]piperidin-4-yl}carbamate → tert-Butyl{1-[2-(6-chloro-3-oxo-1,2,4-benzotriazin-4(3H)-yl)ethyl]piperidin-4-yl}carbamate

HRID 1644505
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 1644505
[C:1]([O:5][C:6](=[O:29])[NH:7][CH:8]1[CH2:13][CH2:12][N:11]([CH2:14][CH2:15][N:16]2[C:21]3[CH:22]=[C:23]([Cl:26])[CH:24]=[CH:25][C:20]=3[N+:19]([O-])=[N:18][C:17]2=[O:28])[CH2:10][CH2:9]1)([CH3:4])([CH3:3])[CH3:2]>C(O)(=O)C.O.[Zn]>[C:1]([O:5][C:6](=[O:29])[NH:7][CH:8]1[CH2:9][CH2:10][N:11]([CH2:14][CH2:15][N:16]2[C:21]3[CH:22]=[C:23]([Cl:26])[CH:24]=[CH:25][C:20]=3[N:19]=[N:18][C:17]2=[O:28])[CH2:12][CH2:13]1)([CH3:4])([CH3:2])[CH3:3]
KomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

5

Edukt 1

HCID 86642661tert-Butyl {1-[2-(6-chloro-1-oxido-3-oxo-1,2,4-benzotriazin-4(3H)-yl)ethyl]piperidin-4-yl}carbamate2×

Produkt 1

HCID 86664539tert-Butyl{1-[2-(6-chloro-3-oxo-1,2,4-benzotriazin-4(3H)-yl)ethyl]piperidin-4-yl}carbamateAusbeute 16 %

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 23994ZincKatalysatorHCID 176Acetic AcidLösungsmittel
HCID 962
Water
Lösungsmittel

Versuchsvorschrift

To a solution of tert-butyl{1-[2-(6-chloro-1-oxido-3-oxo-1,2,4-benzotriazin-4(3H)-yl)ethyl]piperidin-4-yl}carbamate (Intermediate 206) (0.43 g) in acetic acid (8 mL) and water (2 mL) was added zinc dust (0.50 g). After 30 minutes, the solution was filtered and the filtrate concentrated. The residue was then treated with potassium ferricyanide (1.0 g) in water (20 mL). After 2 hours, the reaction was diluted with ethyl acetate. The aqueous layer was collected, the pH adjusted with solid Na2CO3 and extracted with ethyl acetate. The combined organic washes were dried (Na2SO4), filtered and concentrated. The residue was purified by chromatography on silica gel with 0-25% acetone in dichloromethane to yield 66 mg of the product.

Aufarbeitung

  1. filtrationthe solution was filtered
  2. concentrationthe filtrate concentrated
  3. additionThe residue was then treated with potassium ferricyanide (1.0 g) in water (20 mL)
  4. waitAfter 2 hours
  5. additionthe reaction was diluted with ethyl acetate
  6. customThe aqueous layer was collected
  7. extractionextracted with ethyl acetate
  8. dry with materialThe combined organic washes were dried (Na2SO4)
  9. filtrationfiltered
  10. concentrationconcentrated
  11. customThe residue was purified by chromatography on silica gel with 0-25% acetone in dichloromethane

Quellen und Nachweise

ORD-Eintrag
ord-b1640e8af56d429db2290c3d1c2db38c
Quelldatensatz
uspto-grants-2012_02
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US08124602B2

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