Tandem Reactions Involving 1-Silyl-3-Boryl-2-Alkenes. New Access to (<i>Z</i>)-1-Fluoro-1-Alkenes, Allyl Fluorides, and Diversely α-Substituted Allylboronates
作者:Aurélie Macé、Fabien Tripoteau、Qian Zhao、Eric Gayon、Emmanuel Vrancken、Jean-Marc Campagne、Bertrand Carboni
DOI:10.1021/ol4000263
日期:2013.2.15
The reactions of 1-silyl-3-boryl-2-alkenes with various electrophilic reagents (Selecffluor, N-halosuccinimides, benzhydryl, and propargylic alcohols In the presence of a Lewis acid, N-alkoxycarbonyliminium ion) have been investigated as new routes to alpha-substituted allylboronates. Further functional transformations, including allylboration, Suzuki coupling, protodeboronation, and cycloisomerization, have been carried out to illustrate the synthetic potential of these gamma-borylallylsilanes.