Fodder additive and a process for the preparation thereof

Abstract From the Canadian patent

The invention relates to fodder additives comprising a compound inducing the microsomal enzyme system of the liver of the formula (I), (?), wherein R1, R2 and R3 are identical or different and stand for hydrogen, halogen, trihalomethyl, or alkyl or alkoxy each containing from 1 to 6 carbon atoms; R4 is phenyl dialkylaminocarbonyl or alkoxy-carbonyl having from 1 to 6 carbon atoms in the alkyl and alkoxy moieties respectively;, R5 is hydrogen or methyl or together with R4 and the, adjacent nitrogen atom forms a hetero-ring having up to 8 members;, n is 1, 2, 3, 4 ot 5;, m is 0 or 1 a is 0 or 1, with the proviso that if a = O R1 is trihalomethyl and, R2 and R3 both are hydrogen preferably in …