Method for producing 2-[4-(4-chlorophenoxy)-2-(trifluoromethyl)phenyl]-1-(1,2,4-triazol-1-yl)propan-2-ol

A method for obtaining 2-[4-(4-chlorophenoxy)-2-(trifluoromethyl)phenyl]-1-(1,2,4-triazol-1-yl)propan-2-ol of formula (I) from a mixture containing 2_compound of formula (I) and 2-[4-(4-chlorophenoxy)-2-(trifluoromethyl)phenyl]-1-(1,2,4-triazol-4-yl)propan-2-ol of formula (I-sym)

• comprising
• (a) providing a mixture containing the compounds of formulae (I) and (I-sym) in at least one aromatic solvent, where the mixture contains the compound of formula (I) in a concentration of from 30 to 90% by weight, relative to a total weight of the mixture;
• (b) adding to the mixture of step (a) at least one polar aprotic solvent, so that it is contained in an amount of from 1 to 25% by weight, relative to a weight of the solution obtained after the addition of the at least one polar aprotic solvent;
• (c) crystallizing the compound of formula (I) from the mixture obtained in step (b);
• (d) adding to a mother liquid obtained after crystallization in step (c) water in an amount of from 10 to 40% by weight, relative to a total weight of the mother liquid;
• and
• (e) separating a liquid phase from the mixture obtained in step (d) and returning a separated liquid phase to step (a).