Patent ID: 9133089
Filing Date: 2015-09-15
Classification: C07C

Abstract:
1. A process for synthesis of sulfonated, arylated 3-pentadecyl phenol of formula I from Cashew Nut Shell Liquid comprises: wherein R is benzenesulfonic acid; X is —SO3H, where n is 0 or 1; wherein the process steps comprise: a) hydrogenating cardanol with 5% Pd/C in presence of alcoholic solvent at 70° C. under 600 psi hydrogen pressure to obtain 3-pentadecyl phenol; b) arylating 3-pentadecyl phenol to obtain arylated 3-pentadecyl phenol; and c) sulfonating the arylated 3-pentadecyl phenol to obtain sulfonated, arylated 3-pentadecyl phenol of formula I.