2-Methylbenzenesulfonic acid → HCID 18326000, compound

Participants

Reaction Conditions

Reaction Steps

A solution of 16.9 g of 4-ethylphenyl 4-trimethylsilyloxybenzoate (prepared by the procedure in EP-A-358,208, page 9, sec. C) in 15 ml of toluene and 10 ml of ethanol was refluxed for 1 hour and then freed from volatile components by heating at 100° C. for 60 minutes. The remaining 13.3 g of 4-ethylphenyl 4-hydroxybenzoate were dissolved in 15 ml of toluene together with 30 g of methacrylic anhydride and 1.2 g of toluenesulfonic acid, and the mixture was heated at 100° C. for 1 hour. After cooling, the product was precipitated with hexane and recrystallized from ethanol.

Provenance & Evidence