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A Practical Isocyanide-Based Multicomponent Synthesis of Polysubstituted Cyclopentenes. -Polysubstituted cyclopentene derivatives (IV), (VI) are obtained by multicomponent reaction of β-nitrostyrene, benzylidenemalononitriles, and 2-morpholinoethyl isocyanide in the absence of any catalyst. -(SAGIRLI, A.; DUERUEST, Y.; KARIUKI, B.; KNIGHT*, D. W.; Tetrahedron 69 (2013) 1, 69-72, http://dx.

Novel pyrrolopyrazoles are synthesized by cycloaddition reaction of chiral (1‐phenylethyl)maleimide (III) and nitrilimines.

The Preparation and Rearrangement of 3-Pyridyl-4-alkyl (or aryl)-1,2,4-oxadiazole-5(4H)-thiones. -In view of the biological importance of oxadiazolethiones, some new derivatives (III) are synthesized. When heated without metallic copper as the catalyst they remain unchanged. The rearrangement (III) → (IV) is also sensitive to silver catalysis; however, the reaction takes a longer time. -(DUERUEST, Y.; AGIRBAS, H.; SUEMENGEN, D.; Phosphorus, Sulfur Silicon Relat. Elem. 62 (1991) 1-4, 47-51; Dep. Chem., Karadeniz Tech. Univ., Trabzon, Turkey; EN)