Alkylation of 2,6-di-tert-butylphenol with methyl acrylate catalyzed by potassium 2,6-di-tert-butylphenoxide

摘要

The kinetics of catalytic alkylation of 2,6-di-tert-butylphenol(ArOH)with methyl acrylate(MA)in the presence of potassium 2,6-di-tert-butylphenoxide(ArOK)depends on the method for the preparation of ArOK.The reaction of ArOH with KOH at temperatures>180°C affords monomeric ArOK,whose properties differ from those in the case of potassium 2,6-di-tert-butylphenoxide synthesized by the earlier methods.The regularities of ArOH alkylation depend on the ArOK concentration,the ArOH:MA ratio,and the effect of microadditives of polar solvents.