Patent ID: 7199258
Filing Date: 2007-04-03
Classification: C07C

Abstract:
1. A process for preparing a compound of general formula (A) wherein: R is  in which R′ is a hydrogen atom or Br R 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 said process comprising: i) reacting a compound of formula (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 ii) optionally converting a compound of formula (A) wherein R′ is Br in a compound of formula (A) wherein R′ is hydrogen.