Isomerization of Z-vinylic Tellurides in Potassium Vinyltrifluoroborate Synthesis
Author Information
Author(s): Stefani Hélio A, Guadagnin Rafael C, Keppler Artur F, Botteselle Giancarlo V, Comasseto João V, Suganuma Carlos A
Primary Institution: Faculdade de Ciências Farmacêuticas, Universidade de São Paulo, São Paulo, Brazil
Hypothesis
The study investigates the mechanism of isomerization of Z-vinylic tellurides during the synthesis of potassium vinyltrifluoroborate salts.
Conclusion
The study identified radical species that promote the stereoinversion of vinylic compounds during the preparation of potassium vinyltrifluoroborate salts.
Supporting Evidence
- The study presents the first reported preparation of potassium E-vinyltrifluoroborate salts from Z-vinylic tellurides.
- EPR experiments confirmed the presence of radical species during the reaction.
- Control experiments demonstrated that the generation of nBuBF3K salt is dependent on the presence of nBuTenBu.
Takeaway
The researchers found that certain chemicals can change shape during a reaction, which helps make new compounds.
Methodology
The study used EPR spin trapping experiments to identify radical species involved in the reaction mechanism.
Digital Object Identifier (DOI)
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