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Methacrylic Acid → 2-Propenoic acid, 2-methyl-, 2-(1,1-dimethylethyl)-6-((3-(1,1-dimethylethyl)-2-hydroxy-5-methylphenyl)methyl)-4-methylphenyl ester

HRID 638670
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 638670
[CH2:1]([C:14]1[CH:19]=[C:18]([CH3:20])[CH:17]=[C:16]([C:21]([CH3:24])([CH3:23])[CH3:22])[C:15]=1[OH:25])[C:2]1[CH:7]=[C:6]([CH3:8])[CH:5]=[C:4]([C:9]([CH3:12])([CH3:11])[CH3:10])[C:3]=1[OH:13].[C:26](O)(=[O:30])[C:27]([CH3:29])=[CH2:28].C(N(CC)CC)C.C1(C)C(S(Cl)(=O)=O)=CC=CC=1>C1(C)C=CC=CC=1>[C:26]([O:25][C:15]1[C:16]([C:21]([CH3:24])([CH3:23])[CH3:22])=[CH:17][C:18]([CH3:20])=[CH:19][C:14]=1[CH2:1][C:2]1[CH:7]=[C:6]([CH3:8])[CH:5]=[C:4]([C:9]([CH3:12])([CH3:11])[CH3:10])[C:3]=1[OH:13])(=[O:30])[C:27]([CH3:29])=[CH2:28]
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Komponenten

6

Edukt 4

HCID 4093Methacrylic AcidHCID 83982,2'-Methylenebis(4-methyl-6-tert-butylphenol)HCID 8471TriethylamineHCID 8623o-Toluenesulfonyl chloride

Produkt 1

HCID 1090592-Propenoic acid, 2-methyl-, 2-(1,1-dimethylethyl)-6-((3-(1,1-dimethylethyl)-2-hydroxy-5-methylphenyl)methyl)-4-methylphenyl esterAusbeute 94 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 1140TolueneLösungsmittel

Versuchsvorschrift

To the same flask as used in Example 1 were added 340.51 g (1.0 mole) of 2,2'-methylenebis(6-tert-butyl-4-methylphenol), 86.41 g (1.0 mole) of 98.5% methacrylic acid, 500 g of toluene and 242.86 g (2.4 moles) of triethylamine. After replacing the air in the container with nitrogen, 229.14 g (1.2 moles) of o-toluenesulfonyl chloride was added dropwise with stirring. After completion of the dropwise addition, the reaction solution was kept at 90° C. for 1 hour. Thereafter, the organic layer was washed with water until it became neutral, and toluene was removed under reduced pressure. The residue was recrystallized from n-hexane to obtain 384.1 g of a white crystalline 2,2'-methylenebis(6-tert-butyl-4-methylphenol) monomethacrylate having a melting point of 144° to 146° C. Yield, 94%.

Aufarbeitung

  1. additionwas added dropwise
  2. additionAfter completion of the dropwise addition
  3. washThereafter, the organic layer was washed with water until it
  4. customtoluene was removed under reduced pressure
  5. customThe residue was recrystallized from n-hexane

Quellen und Nachweise

ORD-Eintrag
ord-e686fe4dc07544349c8f09239672c13b
Quelldatensatz
uspto-grants-1985_12
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US04562281

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