Methacrylic Acid → gamma-Butyrolactone methacrylate

HRID 1699596

Reaktionsgleichung

Reaktionsgleichung von HRID 1699596
Br[CH:2]1[CH2:7][CH2:6][O:5][C:3]1=[O:4].[C:8]([OH:13])(=[O:12])[C:9]([CH3:11])=[CH2:10].C(C(C)=O)C(C)C>C(N(CC)CC)C>[C:8]([O:13][CH:2]1[CH2:7][CH2:6][O:5][C:3]1=[O:4])(=[O:12])[C:9]([CH3:11])=[CH2:10]

Komponenten

5

Edukt 3

HCID 4093Methacrylic AcidHCID 7909Methyl Isobutyl KetoneHCID 954632(3H)-Furanone, 3-bromodihydro-

Produkt 1

HCID 11206014gamma-Butyrolactone methacrylate

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8471TriethylamineLösungsmittel

Versuchsvorschrift

After charging 100 parts of α-bromo-γ-butyrolactone and 104.4 parts of methacrylic acid (2.0 times in mole based on α-bromo-γ-butyrolactone), a three times amount of methyl isobutyl ketone based on α-bromo-γ-butyrolactone was added thereto to form a solution. To this solution was added dropwise 153.6 parts of triethylamine (3.0 times in mole based on α-bromo-γ-butyrolactone). Then, the solution was stirred at room temperature for about 10 hours. After filtration, the organic layer was washed with 5% aqueous sodium hydrogen carbonate solution and then washed twice with water. The organic layer was concentrated to give α-methacryloyloxy-γ-butyrolactone represented by the following formula:

Aufarbeitung

  1. additionwas added
  2. customto form a solution
  3. filtrationAfter filtration
  4. washthe organic layer was washed with 5% aqueous sodium hydrogen carbonate solution
  5. washwashed twice with water
  6. concentrationThe organic layer was concentrated

Quellen und Nachweise

ORD-Eintrag
ord-d612649e3c7f46fca127ba035579ac0a
Quelldatensatz
uspto-grants-2002_02
Patentnummer
US06348297B1

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