Patent ID: 7112704

Claim:
A process for preparing a compound of formula (I) Wherein R are each, independently of one another, hydrogen, F, Cl, Br, I, CN, COOR 2 , C 1 –C 4 -alkyl, C 1 –C 4 -alkoxy, C 1 –C 4 -alkylthio, C 1 –C 4 -perfluoroalkyl, C 1 –C 4 -perfluoroalkoxy, C 1 –C 4 -perfluoroalkylthio, C 1 –C 4 -polyfluoroalkyl, C 1 –C 4 -polyfluoroalkoxy, or C 1 –C 4 -polyfluoroalkylthio, R2 is C 1 –C 4 -alkyl, and N is an integer from 0 to 4.