@Article{Stefani2008,
author="Hélio A. Stefani and Rafael C. Guadagnin and Artur F. Keppler and Giancarlo V. Botteselle and João V. Comasseto and Carlos A. Suganuma",
title="Mechanistic aspects of the isomerization of Z-vinylic tellurides double bonds in the synthesis of potassium Z-vinyltrifluoroborate salts",
journal="Beilstein Journal of Organic Chemistry",
year="2008",
volume="4",
pages="9",
issn="1860-5397",
doi="10.1186/1860-5397-4-9",
copyright="Stefani et al; licensee Beilstein-Institut",
publisher="Beilstein-Institut",
URL="https://doi.org/10.1186/1860-5397-4-9",
abstract="Through direct transmetalation reaction of Z-vinylic tellurides with nBuLi was observed the unexpected isomerization of double bonds leading to potassium E-vinyltrifluoroborates salts in low to moderate yields. Using EPR spin trapping experiments the radical species that promoted the stereoinversion of Z-vinylic organometallic species during the preparation of potassium vinyltrifluoroborate salts was identified. The experiments support the proposed mechanism, which is based on the homolytic cleavage of the TenBu bond.",
}