PROBLEM TO BE SOLVED: To provide a process for producing ivabradine (I) and its addition salts with a pharmaceutically acceptable acid.SOLUTION: In the process, a compound represented by formula (V) is subjected to reductive amination reaction in the presence of an iron-based catalyst and in the presence or absence of a trimethylamine N-oxide under a hydrogen pressure in an organic solvent or in a mixture of organic solvents.COPYRIGHT: (C)2013,JPO&INPIT【課題】イバブラジン(I)及び薬学的に許容しうる酸とのその付加塩の調製法の提供。【解決手段】式(V)で示される化合物を鉄系触媒の存在下で、トリメチルアミンN-オキシドの存在下又は非存在下で、水素圧下で、有機溶媒中又は有機溶媒の混合物中での還元的アミノ化反応に付すことを特徴とする方法。【選択図】なし