[EN] PROCESS FOR PREPARING 2-OXO-1-PYRROLIDINE DERIVATIVES BY INTRAMOLECULAR ALLYLATION [FR] PROCESSUS DE PREPARATION DE DERIVES 2-OXO-1-PYRROLIDINE PAR ALLYLATION INTRAMOLECULAIRE
[EN] PROCESS FOR PREPARING 2-OXO-1-PYRROLIDINE DERIVATIVES BY INTRAMOLECULAR ALLYLATION [FR] PROCESSUS DE PREPARATION DE DERIVES 2-OXO-1-PYRROLIDINE PAR ALLYLATION INTRAMOLECULAIRE