The present invention relates to a process for the purification of chiral compounds, in particular to the purification of a chiral compound of formula (XI) which may be used as intermediate for the preparation of antifungal agents, preferably posaconazole.
The present invention relates to process for the preparation of a chiral compound of formula (IX) or a salt thereof, wherein Y
1
and Y
2
are independently F or Cl, preferably F, the crystalline compound of formula (IX) as such, and its use for the preparation of an antifungal agent.