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Description
5-Vinyl-5H-thianthren-5-ium Tetrafluoroborate is a vinylated thianthrenium salt developed as a vinyl-group transfer reagent for modern synthetic chemistry. The material is supplied as a solid salt paired with a tetrafluoroborate anion, which is relatively non-nucleophilic and therefore leaves the cationic portion free to react with a wide range of nucleophiles and radical species. In organic synthesis laboratories, this reagent serves as a highly reactive source of a two-carbon unit, allowing researchers to install vinyl groups or construct new carbon frameworks on substrates that were previously difficult to functionalize using classical methods.
The main appeal of this reagent lies in the ability of the thianthrenium group to act simultaneously as an excellent leaving group and as an electron acceptor, so that bond activation proceeds under far milder conditions than conventional high-temperature routes. Its solid salt form makes it considerably easier to weigh, store, and re-dispense than ethylene gas or volatile vinyl halides. Its reactivity is also compatible with photocatalytic schemes and radical chemistry, two approaches now widely used for building carbon–carbon bonds selectively and under mild operating conditions.
In Indonesian laboratories, this reagent is typically encountered in university research groups, organic synthesis laboratories, and medicinal chemistry programmes that are developing new molecular scaffolds. It is generally used at small research scale, where the solid form is a practical advantage for handling in tropical laboratory conditions and for accurate portioning across repeated experiments. Researchers working on methodology development, late-stage functionalization, and photocatalytic carbon–carbon coupling are the usual users of this material.
Laboratory Applications
Vinyl group transfer in organic synthesis, where the reagent delivers a reactive two-carbon unit to nucleophilic partners under conditions much milder than those required by traditional vinylation routes.
Carbon–carbon bond formation methodology, since the thianthrenium moiety acts as an excellent leaving group that allows new carbon frameworks to be assembled selectively on complex substrates.
Photocatalytic coupling research, because the electron-accepting character of the thianthrenium group makes the reagent well suited to single-electron activation under photocatalytic reaction schemes.
Radical chemistry investigations, as the non-nucleophilic tetrafluoroborate counterion leaves the reactive cation available to engage directly with radical species generated in situ.
Functionalization of difficult substrates in medicinal chemistry, providing access to vinylated products on scaffolds that resist classical high-temperature vinylation or volatile reagent approaches.
Physical form: solid salt, comprising a thianthrenium cation and a tetrafluoroborate anion
Pack sizes: available in standard TCI research-scale packaging; please confirm the size options when ordering
Storage: keep in the tightly closed original container, protected from moisture
Handling and Storage
Store the reagent in its tightly closed original container in a cool, dry place away from moisture, direct sunlight, and sources of heat or ignition. Amber glass bottles or the manufacturer's original packaging are suitable containers, and a desiccator or sealed secondary container helps limit moisture uptake during storage in humid tropical conditions. Weigh and transfer the solid inside a fume hood using clean, dry spatulas, and avoid generating dust. Laboratory personnel should wear safety goggles, gloves, and a laboratory coat, and should consult the manufacturer's Safety Data Sheet before use. Keep the material separate from strong bases and strong reducing agents, and return the container promptly to its designated storage location after each use.
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