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1,8-Diazabicyclo(5.4.0)undec-7-ene → HCID 22122152, Verbindung

HRID 1417215
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 1417215
[N:1]([CH2:4][CH2:5][N:6]1[CH2:11][CH2:10][NH:9][C:8](=[O:12])[C:7]1=[O:13])=[N+:2]=[N-:3].[N:14]1[CH:19]=[CH:18][CH:17]=[C:16]([CH:20]=[CH:21][C:22]([O:24][CH:25]([C:32]2[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=2)[C:26]2[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=2)=[O:23])[CH:15]=1.N12CCCN=C1CCCCC2>CN(C)C=O>[N:1]([CH2:4][CH2:5][N:6]1[CH2:11][CH2:10][N:9]([CH:20]([C:16]2[CH:15]=[N:14][CH:19]=[CH:18][CH:17]=2)[CH2:21][C:22]([O:24][CH:25]([C:26]2[CH:27]=[CH:28][CH:29]=[CH:30][CH:31]=2)[C:32]2[CH:33]=[CH:34][CH:35]=[CH:36][CH:37]=2)=[O:23])[C:8](=[O:12])[C:7]1=[O:13])=[N+:2]=[N-:3]
KomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

5

Edukt 3

HCID 811841,8-Diazabicyclo(5.4.0)undec-7-eneHCID 22122160HCID 22122160, VerbindungHCID 54425842HCID 54425842, Verbindung

Produkt 1

HCID 22122152HCID 22122152, VerbindungAusbeute 52,2 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel

Versuchsvorschrift

A mixture of 0.5 g of 1-(2-azidoethyl)-2,3-dioxopiperazine, 1.72 g of diphenylmethyl 3-(3-pyridyl)-acrylate, 0.2 ml of 1,8-diazabicyclo[5.4.0]undec-7-ene and 2.5 ml of N,N-dimethylformamide was stirred at room temperature for 12 hours. The solvent was distilled off under reduced pressure, after which 30 ml of ethyl acetate and 20 ml of water were added to the resulting residue and the pH was adjusted to 6 with 2N hydrochloric acid. The organic layer was separated and the aqueous layer was extracted with 30 ml of ethyl acetate. The combined organic layer was washed with 20 ml of water and a saturated aqueous sodium chloride solution and dried over anhydrous magnesium sulfate. The solvent was distilled off under reduced pressure and the resulting residue was purified by a silica gel column chromatography (eluent; chloroform: methanol=20:1) to obtain 0.71 g of diphenylmethyl 3-[4-(2-azidoethyl)-2,3-dioxopiperazin-1-yl]-3-(pyridin-3-yl)propionate as a light-brown oil.

Aufarbeitung

  1. distillationThe solvent was distilled off under reduced pressure
  2. additionafter which 30 ml of ethyl acetate and 20 ml of water were added to the resulting residue
  3. customThe organic layer was separated
  4. extractionthe aqueous layer was extracted with 30 ml of ethyl acetate
  5. washThe combined organic layer was washed with 20 ml of water
  6. dry with materiala saturated aqueous sodium chloride solution and dried over anhydrous magnesium sulfate
  7. distillationThe solvent was distilled off under reduced pressure
  8. customthe resulting residue was purified by a silica gel column chromatography (eluent; chloroform: methanol=20:1)

Quellen und Nachweise

ORD-Eintrag
ord-131914f6a5624e1fb76a3fe4754ce505
Quelldatensatz
uspto-grants-1999_03
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US05877174

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