Patent ID: 8907132

Claim:
A process for the preparation of lacosamide compound of Formula-1, the process comprising: a) reacting a compound of Formula-10 with acetic anhydride in a solvent or mixture of solvents to produce a compound of Formula-2; and b) O-methylating the compound of Formula-2 with a methylating agent in presence of a base selected from an organic base or inorganic base or its aqueous solution in a solvent or solvent mixture and in presence or absence of phase transfer catalyst to produce lacosamide compound of Formula-1, wherein the organic base is selected from triethylamine, triethanolamine, diisopropylethylamine or di-n-propylamine, or a mixture of the foregoing; and the inorganic base is selected from an alkali metal hydroxide, an alkali metal carbonate, an alkali metal bicarbonate or an alkali metal alkoxide, or a mixture of the foregoing.