A General Route to Silacyclohexanones via Regioselective Copper-Catalyzed Borylative Cyclization.
A copper-catalyzed regioselective borylative cyclization of chloromethyl butenylsilanes with bis(pinacolato)diboron has been reported. The reaction proceeds via an endo-selective cyclization to deliver 4-silacyclohexyl boronates, which undergo a two-step oxidation sequence to afford 4-silacyclohexanones. DFT calculatio...