Process for the manufacture of ivabradine and of intermediates of synthesis thereof

Process for the preparation of a compound of formula (A) in its (S) form

• wherein R is hydrogen or methyl and R′ is hydrogen or a group of formula (IV)
• which comprises
• (i) reacting a compound of formula (A) in racemic form with (S)-ibuprofen, in an organic solvent;
• (ii) stirring the solution at room temperature until a precipitate occurs;
• (iii) treating the precipitate formed in step (ii) with a base to release compound (A) in its (S) form;
• and
• (iv) optionally isolating the compound of formula (A) in its (S) form.