View all references were prepared from aryl methyl ketones. In addition, this approach does not allow incorporation of nitrile function at C??4. ... View all references The structures of all these compounds 2a–l and 3a–l are firmly secured by elemental and spectral analyses. In our case, thionation is best achieved by Lawesson's reagent (LR).2023. Cava , MP and Levinson , MI 1985. Tetrahedron, 41: 5061 [CROSSREF] [CrossRef], [Web of Science ®] View all ...