Patent ID: 7358397
Filing Date: 2008-04-15
Classification: A61P,C07C

Abstract:
1. A process for preparing compounds of formula (VIII) wherein m is 0, 1, 2 or 3 and n is 1, 2, 3 or 4, where the sum of m+n is a maximum of 4, and R R Hal is in each case independently bromine, chlorine or fluorine; and R comprising: (1) preparing compounds of formula (I)  wherein m is 0, 1, 2 or 3 and n is 1, 2, 3 or 4, m+n is a maximum of 4, and R R Hal is each case independently bromine, chlorine or fluorine, by B) converting, a compound of the formula (V) with a reducing agent to the compound of the formula (I), in which R (2) converting at least one compound of formula (I) wherein R (3) converting at at least one compound of the formula (I) of step (2) by reacting with a compound of the formula (VIIa) or (VIIb)  wherein