Formation of the Imidazolinone Ring Under Mild Conditions in the Presence of Sodium HydrideAuthor(s): Aleksey N. Vasiliev | Antonio F. Lopez | Julio D. Fernandez | Anibal J. Mocchi
Journal: Molecules ISSN 1420-3049
Volume: 9; Issue: 7; Start page: 535; Date: 2004;
Keywords: Imidazolinones | herbicides | cyclization | sodium hydride
Substituted imidazolinones containing heterocyclic carboxylic acids as substituents and possessing herbicidal properties were synthesized by cyclization of 2-amino-2,3-dimethylbutyramide with heterocyclic ethyl dicarboxylates under mild conditions. The use of NaH as base leads to a significant increase in the reaction rate and allows the preparation of the target compounds in high yields.