Über zweistufige Redoxsysteme, XV¹⁾ Synthesen vinyloger Bibenzimidazole, Bibenzoxazole und Bibenzothiazole sowie ihrer Aza‐Derivate

Abstract

Die Redoxsysteme N1–3, O1–2 und S1–3 sowie einige Diaza‐ und Tetraazaderivate werden auf verschiedenen Wegen synthetisiert. Je nach System sind die reduzierten oder/und die oxidierten Formen zugänglich.

Lewis Base Stabilized Dicarbon: Predictions from Theory

“…For the synthesis of 5, a potential starting material has been reported in compound 8, which may be susceptible to double deprotonation, furnishing 5. [26] Given the availability of these possible starting reagents, we are currently targeting the synthetic isolation and applications of 5 and 6 as strong, bifunctional carbon-based ligands.…”

“…[26] Given the availability of these possible starting reagents, we are currently targeting the synthetic isolation and applications of 5 and 6 as strong, bifunctional carbon-based ligands.…”

Lewis Base Stabilized Dicarbon: Predictions from Theory

“…For the synthesis of 5 , a potential starting material has been reported in compound 8 , which may be susceptible to double deprotonation, furnishing 5 26…”

NHC‐Stabilised Acetylene—How Far Can the Analogy Be Pushed?

“…Compound 1 had been previously reportedi n1974 by Hünig and co-workers as part of aw ider examination of vinylbenzimidazoles, with some redox chemistry described, but the compound was not characterised. [16] With the above ideas in mind, we began to investigate experimentally andt heoretically if 1 exhibits properties that agree with the notion of ab ifunctional NHO. In this report we show that while the reactivityd oes not follow NHOs,t he exocyclic C=Cb ond in the compound is highly unusual in that it is extremely weak.…”