Novel derivatives of 3-(aminoethyl)-phenols of the formula ##STR1## wherein A is a simple bond or alkylene of 1 to 6 carbon atoms and B is selected from the group consisting of aryl, diarylmethyl, cycloalkyl of 3 to 10 carbon atoms and heteroaryl with the proviso that B is not phenyl when A is ethylene and their non-toxic, pharmaceutically acceptable acid addition salts having a dopaminergic activity and their preparation.