Abstract
AbstractWe have developed a protocol for protoborylation and protosilylation of gem‐difluoroallenes to afford gem‐difluoroallyl‐boronates and gem‐difluoroallylsilanes. It is different from non‐fluorine allenes in which nucleophiles are added to γ‐position of gem‐difluoroallenes to afford β,γ‐addition products. Not only monosubstituted gem‐difluoroallenes but also disubstituted gem‐difluoroallenes could react well with silaboronate (PhMe2Si−Bpin) and bis(pinacolato)diboron (B2pin2). The protocol is simple and efficient to construct compounds which contain tertiary/secondary gem‐difluoroallylboronates and gem‐difluoroallylsilanes. Moreover, diverse organofluorine compounds can be converted from these organoboronates and silanes.
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