Novel [4+ 2] cycloaddition reaction of aryl-methylidenemalononitriles to unsaturated chalcogen amides. Synthesis, structure, and properties of triethylammonium 3, 5, …

…, VV Dotsenko, SG Krivokolysko, EO Kostyrko

Index: Frolov; Dotsenko; Krivokolysko; Kostyrko Chemistry of Heterocyclic Compounds, 2013 , vol. 49, # 9 p. 1289 - 1300 Khim. Geterotsikl. Soedin., 2013 , vol. 49, # 9 p. 1384 - 1396,13

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Citation Number: 2

Abstract

Reaction of arylmethylidenemalononitriles with 3-aryl-2-cyanoprop-2-eneselenoamides in the presence of Et 3 N gave triethylammonium 4, 6-diaryl-3, 5, 5-tricyano-1, 4, 5, 6- tetrahydropyridine-2-selenolates. A similar reaction with cyclohexylidenecyanothioacetamide yields triethylammonium 4-aryl-1, 5, 5-tri-cyano-3- azaspiro [5.5] undec-1-ene-2-thiolate. Alkylation of the obtained selenolates and thiolates ...