Acetonitrile → HCID 58690204, Verbindung

HRID 2098255Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2098255
Br[CH2:2][CH2:3][CH2:4][CH2:5][N:6]1[C:10](=[O:11])[C:9]2=[CH:12][CH:13]=[CH:14][CH:15]=[C:8]2[C:7]1=[O:16].[C:17]([NH:24][OH:25])([O:19][C:20]([CH3:23])([CH3:22])[CH3:21])=[O:18].C(#N)C.N12CCCN=C1CCCCC2>O.Cl>[C:20]([O:19][C:17]([NH:24][O:25][CH2:2][CH2:3][CH2:4][CH2:5][N:6]1[C:10](=[O:11])[C:9]2[C:8](=[CH:15][CH:14]=[CH:13][CH:12]=2)[C:7]1=[O:16])=[O:18])([CH3:23])([CH3:22])[CH3:21]

Komponenten

7

Edukt 4

HCID 6342AcetonitrileHCID 811841,8-Diazabicyclo(5.4.0)undec-7-eneHCID 93575N-(4-Bromobutyl)phthalimideHCID 97534tert-butyl N-hydroxycarbamate

Produkt 1

HCID 58690204HCID 58690204, VerbindungAusbeute 62,2 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 313Hydrochloric AcidLösungsmittelHCID 962WaterLösungsmittel

Versuchsvorschrift

To a mixture of commercially available N-(4-bromobutyl)phthalimide (2.82 g, 10 mmol) and N-Boc-hydroxylamine (2.08 g, 15.6 mmol) was added acetonitrile (2 ml) and successively 1,8-diazabicyclo[5.4.0]undec-7-ene (2.25 ml, 15 mmol). The reaction mixture was stirred at room temperature for 30 min and then at 50° C. for 2 days. It was diluted with a mixture of water (30 ml) and 1 N hydrochloric acid (20 ml). It was extracted with ethyl acetate (2×100 ml). The organic phase was washed with brine (50 ml) and was dried over magnesium sulphate. The crude product was purified by chromatography on silica (60 g), using a gradient of heptane/ethyl acetate 1:0 to 0:1 as eluent to give 2.08 g of 2-(4-(tert-butoxycarbonylaminoxy)butyl)isoindole-1,3-dione.

Aufarbeitung

  1. waitat 50° C. for 2 days
  2. extractionIt was extracted with ethyl acetate (2×100 ml)
  3. washThe organic phase was washed with brine (50 ml)
  4. dry with materialwas dried over magnesium sulphate
  5. customThe crude product was purified by chromatography on silica (60 g)

Quellen und Nachweise

ORD-Eintrag
ord-1bf9af67c4b944c0a0f15b2b9896e7bc
Quelldatensatz
uspto-grants-2013_05
Patentnummer
US08450459B2

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