Patent ID: 8222408
Filing Date: 2012-07-17
Classification: C07D,Y02P

Abstract:
1. Process for preparing an acyl amide compound of formula (I) in which R wherein a) an o-nitrophenoxy carbonyl compound of formula (II) in which R is allowed to crystallize out of an organic solvent and removed, b) the o-nitrophenoxy carboxyl compound is dissolved in a mixture of C c) the pH in this solution is set to a value between 6 and 11, d) the o-nitrophenoxy compound of the formula (II) present in this solution is hydrogenated in the presence of a molybdenum- and/or aluminium- and/or iron-doped sponge metal catalyst based on nickel with hydrogen gas with ring closure to give the benzoxazine compound of the formula (III) in which R e) the compound of the formula (III) is reacted with an acyl halide of the formula (IV) in which R