Patent ID: 8003804

Claim:
A process for the preparation of 4-[1-(4-cyanophenyl)-1-(1,2,4-triazol-1-yl)methyl]benzonitrile of formula I, the process comprising reacting 4-[1-(1H-1,2,4-triazol-1-yl)methylene benzonitrile of formula II with 4-fluorobenzonitrile in the presence of an organic solvent and a silicon amine, wherein the silicon amine is lithium 1,1,1,3,3,3-hexamethyldisilazane and, wherein the lithium 1,1,1,3,3,3-hexamethyldisilazane is first contacted with 4-fluorobenzonitrile to form a first mixture and the first mixture is subsequently contacted with the 4-[1-(1H-1,2,4-triazol-1-yl)methylene benzonitrile of formula II.