The invention relates to glutarimides of formula (I): ##STR1## in which Ar represents a phenyl non substituted or substituted one or more times with one of the substitutents selected from a halogen atom, a hydroxyl, a (C.sub.1 -C.sub.4)alkoxy, a trifluoromethyl, a (C.sub.1 -C.sub.4)alkyl, said substitutents being identical or different ; a pyridyl group; a thienyl group and X is methylene or ethylene, their salts and their enantiomers, as well as their method of preparation and their use for the preparation of the corresponding 3,3-disubstituted piperidines.
本发明涉及公式(I)的戊二
酰亚胺:##STR1## 其中Ar代表未取代或取代一次或多次的苯基,所述取代基从卤素原子、羟基、(C.sub.1-C.sub.4)烷氧基、三
氟甲基、(C.sub.1-C.sub.4)烷基中选择,所述取代基相同或不同;
吡啶基;
噻吩基,X为亚甲基或
乙烯基,以及它们的盐和对应的对映体,以及它们的制备方法和用于制备相应的3,3-二取代
哌啶的用途。