Water → 4-(8-hydroxy-2H-chromen-3-ylcarbonyl)morpholine

HRID 2085120Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2085120
C[O:2][C:3]1[CH:4]=[CH:5][CH:6]=[C:7]2[C:12]=1[O:11][CH2:10][C:9]([C:13]([N:15]1[CH2:20][CH2:19][O:18][CH2:17][CH2:16]1)=[O:14])=[CH:8]2.B(Br)(Br)Br.O>C(Cl)Cl>[OH:2][C:3]1[CH:4]=[CH:5][CH:6]=[C:7]2[C:12]=1[O:11][CH2:10][C:9]([C:13]([N:15]1[CH2:20][CH2:19][O:18][CH2:17][CH2:16]1)=[O:14])=[CH:8]2

Komponenten

5

Edukt 3

HCID 962WaterHCID 25134Boron tribromideHCID 107548644-(8-methoxy-2H-chromen-3-ylcarbonyl)morpholine

Produkt 1

HCID 105633504-(8-hydroxy-2H-chromen-3-ylcarbonyl)morpholineAusbeute 99,3 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel

Versuchsvorschrift

To a solution (70 ml) of 4-(8-methoxy-2H-chromen-3-ylcarbonyl)morpholine (3.5 g) in methylene chloride was added dropwise boron tribromide (9.5 g) at −78° C. The reaction temperature was set to room temperature and the mixture was stirred for 2 hr. The reaction mixture was poured into water and stirred for 1 hr. The organic layer was separated and washed with water and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure to give the title compound (3.3 g) as brown crystals.

Aufarbeitung

  1. customwas set to room temperature
  2. stirringstirred for 1 hr
  3. customThe organic layer was separated
  4. washwashed with water
  5. dry with materialdried over anhydrous magnesium sulfate
  6. customThe solvent was evaporated under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-cac1981d2de848af8f61d3667dca3331
Quelldatensatz
uspto-grants-2004_04
Patentnummer
US06720320B2

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