... [4] For a recent review on the preparation of 2-benzimidazolinones and their use as medicinal agents see: PN Preston, ''Heterocyclic Compounds", Vol 40 Part 1, 1981, p 344 and Part 2, 1980, p 531. [5] G. Bobowski, J. Heterocyclic Chem., 18, 1179 (1981). ...