Alkylation of phenol with oct-1-ene with an aluminosilicate catalyst

Phenol Alkylation with 1-Octene on Solid Acid Catalysts

“…The low initial ortho-alkylation selectivity was unexpected, since high ortho-selectivity has previously been claimed for alkylation of phenol with 1-octene at 230 °C and 1-decene at 160-200 °C on ASA catalysts. 48,49 The role of aluminum oxide Lewis acid centers and the similarity to phenol alkylation on γ-alumina was pointed out as an explanation. 49 In the present investigation, the opposite was seen, with the most alumina rich catalysts (Siral-1.5 and Siral-5) yielding the highest initial meta-/para-selectivity.…”