Process for the preparation of rufinamide

The present invention relates to a process for the preparation of rufinamide of formula (I), which process comprises: (i) reacting a 2,6-difluorobenzylhaIide of formula (II), wherein X is chloride, bromide or iodide, with an azide to obtain 2-(azidomethyl)-1,3- difluorobenzene of formula (III); (ii) reacting 2-(azidomethyl)-1,3-difluorobenzene of formula (III) with methyl propiolate to obtain methyl 1-(2,6-difluorobenzyl)-1 H-1,2,3- triazole-4-carboxylic acid of formula (IV); and (iii) reacting methyl 1-(2,6-difluorobenzyl)- 1 H-1,2,3-triazole-4-carboxylic acid of formula (IV) with ammonia to obtain rufinamide of formula (I).