Methacrylic Acid → gamma-Butyrolactone methacrylate

HRID 1862186

Reaktionsgleichung

Reaktionsgleichung von HRID 1862186
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-4×

Produkt 1

HCID 11206014gamma-Butyrolactone methacrylate

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8471TriethylamineLösungsmittel

Versuchsvorschrift

A vessel was charged with 100 g of α-bromo-γ-butyrolactone and 104.4 g of methacrylic acid(2.0 times the molar amount of α-bromo-γ-butyrolactone). Then, methyl isobutyl ketone in a weight three times the weight of α-bromo-γ-butyrolactone was added thereto to form a solution. To the solution was added dropwise 183.6 g of triethylamine(3.0 times the molar amount of α-bromo-γ-butyrolactone), followed by stirring for about 10 hours at room temperature. After filtration, the resulting organic layer was washed with an aqueous solution of 5 wt % sodium bicarbonate and then washed with water twice. The organic layer was concentrated to obtain α-methacryloyloxy-γ-butyrolactone represented by the following formula.

Aufarbeitung

  1. customto form a solution
  2. filtrationAfter filtration
  3. washthe resulting organic layer was washed with an aqueous solution of 5 wt % sodium bicarbonate
  4. washwashed with water twice
  5. concentrationThe organic layer was concentrated

Quellen und Nachweise

ORD-Eintrag
ord-173010909dce4706bc817d02bd4e48ae
Quelldatensatz
uspto-grants-2003_03
Patentnummer
US06537726B2

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