Patent ID: 7199258

Claim:
A process for preparing a compound of general formula (A) wherein: R is in which R′ is a hydrogen atom or Br R 1 –R 12 are the same or different and independently are hydrogen, straight or branched C 1 –C 6 alkyl, optionally substituted with aryl; m, n, o, q, r and s are each independently an integer from 0 to 6, and p is 0 or 1, and X is O, S, SO, SO 2 , NR 13 or PR 13 , in which R 13 is hydrogen, C 1 –C 6 alkyl, or X is selected from the group consisting of: cycloalkylene with 5 to 7 carbon atoms into cycloalkylene ring, the ring being eventually substituted with side chains T, wherein T is straight or branched alkyl with from 1 to 10 carbon atoms; arylene, optionally substituted with one or more halogen atoms, straight or branched alkyl groups containing from 1 to 4 carbon atoms, or a straight or branched C 1 –C 3 perfluoroalkyl; a 5 or 6 member saturated, unsaturated, or aromatic heterocyclic ring selected from said process comprising: i) reacting a compound of formula (B) R—COOZ (B) wherein R is as above defined and Z is hydrogen or a cation selected from Li+, Na+, Ca++, Mg++, tetralkylammonium, tetralkylphosphonium, with a compound of formula (C) wherein R 1 –R 12 and m, n, o, p, q, r, s are as defined above and Y is selected from a halogen atom —BF 4 , —SbF 6 , FSO 3 —, R A SO 3 —, in which R A is a straight or branched C 1 –C 6 alkyl, optionally substituted with one or more halogen atoms, or a C1–C6 alkylaryl; R B COO − , wherein R B is straight or branched C 1 –C 6 alkyl, aryl, optionally substituted with one or more halogen atoms or NO 2 groups, C 4 –C 10 heteroaryl and containing one or more heteroatoms, which are the same or different, selected from nitrogen, oxygen sulfur or phosphorus; aryloxy optionally substituted with one or more halogen atoms or NO 2 groups, or heteroaryloxy and ii) optionally converting a compound of formula (A) wherein R′ is Br in a compound of formula (A) wherein R′ is hydrogen.