4-Hydroxybenzoic Acid → Ethenyl 4-hydroxybenzoate

HRID 619546Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 619546
[C:1]([O:4][CH:5]=[CH2:6])(=[O:3])[CH3:2].[OH:7][C:8]1[CH:16]=[CH:15]C(C(O)=O)=[CH:10][CH:9]=1.C([O-])(=O)C.[K+]>C([O-])(=O)C.[Pd+2].C([O-])(=O)C.ClCCl>[OH:7][C:8]1[CH:16]=[CH:15][C:2]([C:1]([O:4][CH:5]=[CH2:6])=[O:3])=[CH:10][CH:9]=1

Komponenten

6

Edukt 3

HCID 1354-Hydroxybenzoic AcidHCID 7904Vinyl AcetateHCID 517044Potassium Acetate

Produkt 1

HCID 13040874Ethenyl 4-hydroxybenzoateAusbeute 10 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 167845palladium(II) acetateKatalysatorHCID 6344DichloromethaneLösungsmittel

Versuchsvorschrift

2000 g of dichloromethane, 24.9 g of vinyl acetate, 40.0 g of 4-hydroxybenzoic acid, 0.79 g of palladium acetate and 3.5 g of potassium acetate were charged into a separable flask of the same type as used in Reference Example 3 and subjected to reaction at 50° C. for 6 hours, while replacing the flask inside atomosphere with a nitrogen gas. After completion of the reaction, the reaction mixture was washed successively with an aqueous 0.5N sodium carbonate solution and water, and then treated in th same manner as in Reference Example 3, whereby 4.8 g of vinyl 4-hydroxybenzoate having the following chemical formula was obtained (yield: 10%): ##STR5##

Aufarbeitung

  1. customsubjected to reaction at 50° C. for 6 hours
  2. customAfter completion of the reaction
  3. washthe reaction mixture was washed successively with an aqueous 0.5N sodium carbonate solution and water
  4. additiontreated in th same manner as in Reference Example 3, whereby 4.8 g of vinyl 4-hydroxybenzoate having the following chemical formula
  5. customwas obtained (yield: 10%)

Quellen und Nachweise

ORD-Eintrag
ord-12e3692588a84529baaa0f3f0cbb473a
Quelldatensatz
uspto-grants-1999_09
Patentnummer
US05959037

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