Jan. 1981 Synthesis of 1 -Alkyl and 1,3-Dialkyl-2-benzimidazolones from 1-Alkenyl-2-benzimidazolones using Phase-Transfer Catalysis Technique Gaston Vernin, Hicharn Domlog, Chan Siv, Jacques Metzger Laboratoire de Chimie Moleculaire, Associe au CNRS (LA 126). Facultc des Sciences et Techniques de St-Jerome, Marseille 13397 Cedex 4, Franrr Ahrned Karnal El-Shafei Chcmistry Department, Faculty of Sciences, Sohag, Egypt Received May 27, 1980