Pyrrolidin-2-ones are produced by hydrogenation of 3-pyrrolin-2-ones, which latter compounds could not prior to this invention be easily obtained. These 3-pyrrolin-2-ones with various substituents are produced by ring closure of N-aroylmethyl-acetamides. The ring closure is effected in basic media under nitrogen.
吡咯烷酮是通过对3-
吡咯烯-2-酮进行氢化而产生的,而这些后者化合物在这项发明之前很难获得。这些带有各种取代基的3-
吡咯烯-2-酮是通过N-芳酰甲基乙酰胺的环闭合来产生的。这种环闭合在氮气下在碱性介质中进行。