METHOD OF PREPARING 4-ALKYLPHENOLS Russian patent published in 2001 - IPC

FIELD: synthesis of alkylphenols. SUBSTANCE: described is method of synthesis of alkylphenols of general formula: wherein R is tertiary C_nH_2n+1C alkylphenols, n is 4-8, 10 and secondary C₁₀H₂₁ alkylphenols. Process is carried out by heating mixture of phenol and corresponding alcohol in the presence of 85% phosphoric acid catalyst original mixture consisting of phenol, alcohol and phosphoric acid at 1:2:2 molar ratio is heated at temperature of 155-190 C for 1 h, thus increasing process rate and increasing yield of reaction products. EFFECT: more efficient preparation method. 2 cl, 7 ex, 2 tbl