Process for the preparation of a rivaroxaban and intermediates formed in said process

摘要

The invention relates to a process for the preparation of 5-chloro-N-({(5S)-2-oxo-3-[4-(3-oxo-morpholine-4-yl)-phenyl]-1,3-oxazolidine-5-yl}-methyl)thiophen-2-carboxamide of formula:having the INN rivaroxaban.The process is characterized by the reactions according to claim I. The invention also relates to intermediates formed in the above process.