The present invention relates to a process for the preparation of vilazodone hydrochloride directly from the corresponding carboxylic acid ester derivative by aminolysis. Also part of the invention is a polymorphic form of vilazodone, a process for preparation of novel pure amorphous form of vilazodone hydrochloride and polymorphs of ethyl 5-(4-(4-(5-cyano-lH-indol-3-yl)butyl)piperazin-l-yl)benzofuran-2- carboxylate.Cette invention concerne un procédé amélioré pour la préparation du chlorhydrate de vilazodone et un procédé de préparation dune nouvelle forme amorphe pure de chlorhydrate de vilazodone.
