반응 #725852

반응 방정식

o-toluenesulfonyl chloride

2,2'-methylenebis(6-tert-butyl-4-methylphenol)

methacrylic acid

triethylamine

→

2,2'-methylenebis(6-tert-butyl-4-methylphenol) monomethacrylate

수율 94.0%

용매

toluene

반응 조건

후처리

1. 1
   workup.ADDITIONwas added dropwise
2. 2
   workup.ADDITIONAfter completion of the dropwise addition
3. 3
   세척Thereafter, the organic layer was washed with water until it
4. 4
   기타toluene was removed under reduced pressure
5. 5
   기타The residue was recrystallized from n-hexane

실험 절차

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%.

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