Processes for the preparation of paliperidone and pharmaceutically acceptable salts thereof and intermediates for use in the processes

摘要

The present invention relates to novel compounds of formula (VIII) and (X), processes for their preparation and their use in the preparation of paliperidone or a salt thereof. There is also provided by the present invention novel processes for preparing intermediates for use in the preparation of paliperidone or a salt thereof, and novel processes for preparing paliperione or a salt thereof.