Acetylene Radical-Cations in Carbon-Carbon Bond Forming Reactio ns

Title:Acetylene Radical-Cations in Carbon-Carbon Bond Forming Reactio ns

Volume: 14 Issue: 3

Author(s): Aleksander V. Vasilyev*

Affiliation:

• Department of Chemistry, Saint Petersburg State Forest Technical University, Institutsky per. 5, Saint Petersburg, 194021,Russian Federation

Keywords: Acetylene radical-cations, carbon-carbon bond forming reactions, oxidative dimerization, ESR spectroscopy, cyclic voltammetry, oxidation of acetylene.

Abstract: This review surveys carbon-carbon bond forming reactions of acetylene radical-cations, generated under the one-electron oxidation of alkynes in the systems lead dioxide (PbO2) – strong acid (CF3CO2H, FSO3H, HF). The oxidative dimerization proceeds very regioselectively at acetylene carbons. This approach is a powerful synthetic tool, leading to complex and polyfunctional organic molecules, such as, dicarbonyl- and tetracarbonyl-substituted ethylenes, 1,4-difluoro- and 1,4- dichlorobutadienes, etc. Reaction mechanisms of acetylene radical-cations are considered. The reactivity of acetylene radical-cations may be explained by their electronic structure, determined by means of electron spin resonance spectroscopy and cyclic voltammetry.

Cite this article as:

Vasilyev V. Aleksander*, Acetylene Radical-Cations in Carbon-Carbon Bond Forming Reactio ns, Mini-Reviews in Organic Chemistry 2017; 14 (3) . https://dx.doi.org/10.2174/1570193X14666170208101802