Diels–Alder reaction of tetraarylcyclopentadienones with benzo[b]thiophene S, S-dioxides: an unprecedented de-oxygenation vs. sulfur dioxide extrusion. Issue 97 (12th November 2020)

• Record Type: Journal Article
• Authors: Manikandan, Palani; Karunakaran, Jayachandran; Varathan, Elumalai; Schreckenbach, Georg; Mohanakrishnan, Arasambattu K
• Is Part Of: Chemical communications. Volume 56:Issue 97(2020)
• Page Start: 15317
• Page End: 15320
• Publication Date: 2020-11-12
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/d0cc05842d
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : The Diels–Alder adduct, dihydrodibenzothiophene S, S -dioxides underwent aromatization either through de-oxygenation or extrusion of sulfur dioxide to furnish substituted dibenzothiophenes or benzenes. Abstract : Diels–Alder reaction of tetraarylcyclopentadienones with benzo[ b ]thiophene dioxides in xylenes at reflux led to the formation of tetra aryl-substituted dibenzothiophene as well as penta aryl-substituted benzene analogues depending on the influence of aryl substituents present on cyclopentadienones. The intermediate dihydrodibenzothiophene-dioxides underwent aromatization either through de-oxygenation or extrusion of sulfur dioxide to furnish substituted dibenzothiophenes or benzenes.