Improvment Synthesis of 2, 6-bis(5-tert-butylsalicyl)-4-tert-butylphenol

In this paper,A improved method of synthesis of 2,6-bis(5-tert-butylsalicyl-4-tert-butyl.phenol was described.In first step,2,6-bis(bydromethyl)-4-tert-butyphenol has been prepared from p-tert-buty(phenil and formaldehyde in basic system(NaOH),and the end product was used directly in second step.In second step,the title compound was synthesized from (I) and p-tert-butylphenol with HCl or p-toluen sulfonic acid as catalyst.the total yield was increased from 18%(reported in previous literature)to 43%,and the treatment of the product was easier.