Patent ID: 8222402

Claim:
A process for preparing a compound of the formula II wherein: R 1.1 denotes CH 3 , CF 3 , NR 1.1.1 R 1.1.2 or piperidinyl, R 1.1.1 denotes H, C 1-6 -alkyl, O-benzyl, O-tert.butyl R 1.1.2 denotes H, C 1-6 -alkyl, O-benzyl, O-tert.butyl R 1.2 denotes NR 1.2.1 R 1.2.2 , R 1.2.1 denotes H, C 1-6 -alkyl, O-benzyl, O-tert.butyl R 1.2.2 denotes H, C 1-6 -alkyl, O-benzyl, O-tert.butyl and R 1.3 denotes CH 3 , CF 3 , F, Cl or Br, comprising the steps of: (a) coupling a compound of the formula III wherein R 1.1 , R 1.2 and R 1.3 are as hereinbefore defined, with a compound of the formula IV wherein R 3 denotes an imidazole or triazole group which is bound via a nitrogen atom; (b) isolating the compound of the formula II obtained in step (a) by crystallisation from a solvent and (c) optionally recrystallising a solid obtained in step (b) from a suitable solvent.