2-Methylbenzenesulfonic acid → HCID 18326000, Verbindung

HRID 399884

Reaktionsgleichung

Reaktionsgleichung von HRID 399884
C[Si](C)(C)O[C:4]1[CH:20]=[CH:19][C:7]([C:8]([O:10][C:11]2[CH:16]=[CH:15][C:14]([CH2:17][CH3:18])=[CH:13][CH:12]=2)=[O:9])=[CH:6][CH:5]=1.OC1C=[CH:39][C:27]([C:28]([O:30]C2C=CC(CC)=CC=2)=[O:29])=[CH:26]C=1.C(OC(=O)C(C)=C)(=O)C(C)=C.C1(C)C(S(O)(=O)=O)=CC=CC=1>C1(C)C=CC=CC=1.C(O)C>[C:28]([O:30][C:19]1[CH:20]=[CH:4][CH:5]=[CH:6][C:7]=1[C:8]([O:10][C:11]1[CH:16]=[CH:15][C:14]([CH2:17][CH3:18])=[CH:13][CH:12]=1)=[O:9])(=[O:29])[C:27]([CH3:39])=[CH2:26]

Komponenten

7

Edukt 4

HCID 69252-Methylbenzenesulfonic acidHCID 12974Methacrylic anhydrideHCID 13719873HCID 13719873, VerbindungHCID 53950183HCID 53950183, Verbindung

Produkt 1

HCID 18326000HCID 18326000, Verbindung

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 702EthanolLösungsmittelHCID 1140TolueneLösungsmittel2×

Reaktionsbedingungen

Temperatur
100 °C

Versuchsvorschrift

A solution of 16.9 g of 4-ethylphenyl 4-trimethylsilyloxybenzoate (prepared according to the instructions in EP-A-0 358 205, page 9, section C) in 15 ml of toluene and 10 ml of ethanol was boiled under reflux for one hour and then freed from volatile constituents by heating at 100° C. for 60 minutes. The 13.3 g of 4-ethylphenyl 4-hydroxybenzoate which remained were dissolved, together with 30 g of methacrylic anhydride and 1.2 g of toluenesulfonic acid, in 15 ml of toluene and the solution was heated at 100° C. for 1 hour. After cooling, the product was precipitated with hexane and recrystallized from ethanol.

Aufarbeitung

  1. temperatureunder reflux for one hour
  2. temperaturethe solution was heated at 100° C. for 1 hour
  3. temperatureAfter cooling
  4. customthe product was precipitated with hexane
  5. customrecrystallized from ethanol

Quellen und Nachweise

ORD-Eintrag
ord-6b267d8fecba4701972798274e4568d9
Quelldatensatz
uspto-grants-1998_10
Patentnummer
US05824733

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