This invention relates to the new amino-substituted propiophenone derivatives, that is, 4'-substituted 2-methyl-3-piperidino-propiophenones represented by the formula: ##STR1## wherein R stands for a lower alkyl group having 2 to 3 carbon atoms, as well as pharmacologically acceptable acid-addition
Following Examples will serve to illustrate the embodiments of the production of the compounds contemplated in the invention, but the invention, of course, is not intended to be limited thereby.
EXAMPLE 1
Preparation of 4'-ethyl-2-methyl-3-piperidino-propiophenone
To 60 mls. of isopropanol, there