Patent ID: 7045139

Claim:
A process for preparing cinnamidoalkylamine and/or benzamidoalkylamine quaternary compounds of Formula I, wherein; ArCO is selected from p-N,N-dimethylamino benzoyl or p-methoxy cinnamoyl; R 1 is selected from H or alkyl groups containing from 1 to 6 carbon atoms; R 2 and R 3 are independently selected from alkyl groups containing from 1 to 12 carbon atoms; R 4 is selected from alkyl or alkenyl groups containing from 8 to 22 carbons; and n is an integer having values from 1 to 6, the process comprising steps of (i) quaternisation of 1.0 mole of cinnamidoalkylamine and/or benzamidoalkylamine of Formula II with 1.0 mole of alkylating compound of Formula III, wherein, R 1 , R 2 , R 3 , R 4 and n is same as that in the compound of said Formula I and X − is tosylate anion, with or without solvent, to obtain a quaternary ammonium halide of Formula IV; (ii) treating the aqueous solution of quaternary halide of Formula IV obtained in step (i) with stoichiometric quantities of sodium p-toluene sulphonate to get water insoluble quaternary ammonium tosylate of Formula I.