Thia- and Selenaheterocycles by a Four-Component Reaction using Elemental Sulfur and Selenium
نویسندگان
چکیده
The course of the four-component reactions of (2-benzimidazolyl) acetonitrile, carbondisulfide, isothiocyanate, and sulfur and selenium, respectively, is quite different. Whereas in the case of sulfur a tetracyclic [1,3]thiazolo[4 ,5 :4,5]pyrimido[1,6-a]benzimidazol-2(3H)-thione is formed, a zwitterionic 7-(benzimidazolium-2-yl)-[1,2]thiaselenolo[2,3-b][1,2,4]thiaselenazole-6-thiolate (an azaselenadithiapentalene) is the product in the case of selenium. The structures of the products have been established by X-ray crystallography, and reaction mechanisms for their formation are proposed. DOI: https://doi.org/10.1080/17415990600600097 Posted at the Zurich Open Repository and Archive, University of Zurich ZORA URL: https://doi.org/10.5167/uzh-54092 Accepted Version Originally published at: Atanassov, P K; Linden, A; Heimgartner, H (2006). Thiaand selenaheterocycles by a four-component reaction using elemental sulfur and selenium. Journal of Sulfur Chemistry, 27(3):181-191. DOI: https://doi.org/10.1080/17415990600600097
منابع مشابه
Reaktionen von Vanadium(V)- und Tantal(V)-Komplexen mit kinetisch stabilisierten Phosphaalkinen. Einfache Synthese von 1,3,4-Thia- und 1,3,4-Selenadiphospholen Reactions of Vanadium(V) and Tantalum(V)-Complexes with Kinetically Stabilized Phosphaalkynes. A Simple Synthesis of 1,3,4-Thia and 1,3,4-Selenadiphospholes
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