Patent ID: 6291710
Filing Date: 2001-09-18
Classification: C07C

Abstract:
A one-pot process for preparing compounds of the general formula (I) ##STR7##in whichn=1 to 18,R.sup.1, R.sup.2, independently, represent H, F, Cl, Br, (C.sub.1 -C.sub.8)-alkyl, (C.sub.1 -C.sub.8)-alkoxy, (C.sub.2 -C.sub.8)-alkoxyalkyl,(C.sub.3 -C.sub.8)-cycloalkyl, (C.sub.6 -C.sub.18)-aryl, (C.sub.7 -.sub.19)-aralkyl, (C.sub.3 -C.sub.18)-heteroaryl, (C.sub.4 -C.sub.9)-heteroaralkyl, (C.sub.1 -C.sub.8)-alkyl-(C.sub.6 -C.sub.18)-aryl, (C.sub.1 -C.sub.8)-alkyl-(C.sub.6 -C.sub.18)-heteroaryl, (C.sub.1 -C.sub.8)-alkyl-(C.sub.3 -C.sub.8)-cycloalkyl or (C.sub.3 -C.sub.8)-cycloalkyl-(C.sub.1 -C.sub.8)-alkyl group, or R.sup.1 and R.sup.2 are linked via a (C.sub.3 -C.sub.7)carbocyclic compound for the same value of n,with the proviso that R.sup.1 and R.sup.2 may each be regarded per se as representing different substituents,R.sup.3 represents H, Cl, Br, I or R.sup.1,Hal represents Cl or Br, byreacting compounds of the general formula (II) ##STR8##in whichn, R.sup.1, R.sup.2, R.sup.3 and Hal maybe defined in the same way as set forth above,with sulfite salts thereafterhalogenating with a halogenating agent in an organic solvent which is fully or partly miscible with water, and isolating compounds of general formula (I).