Patent ID: 7126005

Claim:
A process of preparing a compound of Formula VII: wherein R 1 is a methylthio, methylsulfoxy, methylsulfonyl or nitro group, the process comprising the steps of: reacting the compound of Formula VIII with an agent in the presence of a first organic base and a first organic solvent to produce a compound of Formula IX wherein R 2 is an alkyl, haloalkyl, cycloalkyl, alkenyl, alkynyl, alkoxy, aralkyl, aralkenyl, aryl or aromatic heterocyclic group; and R 3 is a hydrogen, alkyl, haloalkyl, cycloalkyl, alkenyl, alkynyl, alkoxy, aralkyl, aralkenyl, aryl or aromatic heterocyclic group; converting the compound of Formula IX to a compound of Formula X: wherein R 4 is a hydrogen, alkyl, haloalkyl, cycloalkyl, phenyl or phenylalkyl group, where the phenyl ring may be substituted by one or two halogen, alkyl, alkoxy or nitro groups, by reacting the compound of Formula IX with R 4 COCl in the presence of a second organic base in a second organic solvent to produce the compound of Formula X; fluorinating the compound of Formula X with a fluorinating agent in the presence of a third organic solvent to obtain the compound of Formula XI and further processing the compound of Formula XI to obtain the compound of Formula VII.