Patent ID: 7238722
Filing Date: 2007-07-03
Classification: C07D

Abstract:
1. Process for preparing compounds of the formula (I) in which R  and R where, in the formulae (II) and (IIIa) to (IIIf), A is absent or is a C B is absent or is oxygen, sulphur or NR D is a carbonyl group and E is R Ar is a mono-, bi- or tricyclic aromatic radical having a total of 5 to 18 ring atoms, and in which at most one ring atom per cycle is selected from the group of oxygen, sulphur and nitrogen, and the mono-, bi- or tricyclic aromatic radical is optionally mono- or polysubstituted, comprising in one step, a), converting the compounds of the formula (IV) in which R by halogenation and elimination to compounds of the formula (V) in which R and in one step, b), converting the compounds of the formula (V) to compounds of the formula (I) by reacting with compounds of the formula (VI) in which Ar is as defined above and Hal is iodine, bromine or chloroine, in the presence of a catalyst.