Patent ID: 7196197

Claim:
Process for the preparation of Flecainide, as Flecainide base or any pharmaceutically acceptable salts thereof, comprising: preparation of a compound of formula VI wherein R 1 is H alkali metal or a C 1 to C 9 alkyl group; from compounds of formula III wherein X 1 is F, Cl, Br or I and R 1 is H, alkali metal or a C 1 to C 9 alkyl group; optional conversion of the compound of formula VI to the ester of formula VII by reacting with a hydroxyl compound R 2 OH; wherein R 2 is C 1 to C 9 alkyl group, aryl group or succinimidyl; amide formation of the compound of formula VI or VII forming flecainide base by reacting with 2-(aminomethyl)piperidine and; optionally forming a pharmaceutically acceptable salt thereof.