Process for ortho-alkylation of phenol compounds

摘要

A process for alkylating the ortho-position of a phenol compound which comprises bringing a phenol compound containing at least one hydrogen atom at its ortho-position and an alcohol into contact with a catalyst in the gaseous phase, said catalyst being selected from the group consisting of A. A MIXTURE OF IRON OXIDE AND SILICA IN WHICH THE ATOMIC RATIO OF Fe to Si is 100 : 0.03 - 200, and B. A MIXTURE OF IRON OXIDE, SILICA AND CHROMIUM OXIDE IN WHICH THE ATOMIC RATIO OF Fe to Si to Cr is 100 : 0.1 - 5 : 0.1 - 5.