ARYL ETHANOL AMINES, PROCESS FOR THEIR PREPARATION AND THEIR USE AS GROWTH PROMOTORS

摘要

The growth of livestock is promoted by the novel arylethanolamines of the formula (I) in which R1 represents cyano, R2 represents amino, alkylamino or acylamino, R3 represents hydrogen, halogen, alkyl, halogenoalkyl, alkoxy, halogenoalkoxy, hydroxymethyl, nitro or methylsulphonylmethyl, R4 represents hydrogen, alkyl or acyl, R5 represents hydrogen or alkyl, R6 represents alkyl, n represents 1, 2 or 3, R7 represents the radicals -COR9, -O-alkylene-COR9, -alkylene-R10 or -O-alkylene-R10, R8 represents hydrogen, alkyl or halogen, R9 represents hydroxyl, alkoxy or the radical -NR11R12, R10 represents hydroxyl, alkoxy or the radical NR11R12, R11 represents hydrogen or alkyl, and R12 represents hydrogen or alkyl, and the physiologically acceptable salts thereof.