Methacrylic Acid → 2-(2-Hydroxy-3-tert-butyl-5-methylbenzyl)-4-methyl-6-tert-butylphenyl methacrylate

HRID 638670Notes

Reaction equation

HRID 638670 reaction equation
[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]

Participants

6

Reactant 4

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

Product 1

HCID 1090592-(2-Hydroxy-3-tert-butyl-5-methylbenzyl)-4-methyl-6-tert-butylphenyl methacrylateYield 94%

Reagents, catalysts & solvents 1

HCID 1140TolueneSolvent

Procedure

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%.

Workup

  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

Sources & evidence

ORD record
ord-e686fe4dc07544349c8f09239672c13b
Source dataset
uspto-grants-1985_12
Patent number
US04562281

Reaction notes

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