Morpholine → HCID 59354746, Verbindung

HRID 655411

Reaktionsgleichung

Reaktionsgleichung von HRID 655411
Br[C:2]1[C:3]([N:5]([CH3:10])[C:6](=[O:9])[C:7]=1[Br:8])=[O:4].C([O-])([O-])=O.[Cs+].[Cs+].[NH:17]1[CH2:22][CH2:21][O:20][CH2:19][CH2:18]1>CN(C=O)C>[Br:8][C:7]1[C:6](=[O:9])[N:5]([CH3:10])[C:3](=[O:4])[C:2]=1[N:17]1[CH2:22][CH2:21][O:20][CH2:19][CH2:18]1

Komponenten

5

Edukt 3

HCID 8083MorpholineHCID 10796Cesium carbonateHCID 181552,3-Dibromo-N-methylmaleimide

Produkt 1

HCID 59354746HCID 59354746, VerbindungAusbeute 85 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel

Versuchsvorschrift

To a room temperature, stirred solution of 2,3-dibromo-N-methylmaleimide (1 g, 0.004 mol) in DMF (10 mL) was added Cs2CO3 (1.34 g, 0.004 mol) followed by morpholine (360 mg, 0.004 mol) under N2 atmosphere. The reaction mixture was then stirred for 30 minutes, quenched with ice water, and extracted with EtOAc (2×50 mL). The combined organic layers were washed with water, dried over anhydrous Na2SO4, filtered and concentrated in vacuo to afford 3-bromo-1-methyl-4-morpholino-1H-pyrrole-2,5-dione (0.87 g, 85%) as a solid.

Aufarbeitung

  1. customquenched with ice water
  2. extractionextracted with EtOAc (2×50 mL)
  3. washThe combined organic layers were washed with water
  4. dry with materialdried over anhydrous Na2SO4
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo

Quellen und Nachweise

ORD-Eintrag
ord-bd46410cdf5d4ea8a204638e358eb277
Quelldatensatz
uspto-grants-2011_12
Patentnummer
US08071595B2

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