Borane-Catalyzed Selective Hydrosilylation of Internal Ynamides Leading to β‑Silyl (Z)‑Enamides
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We have developed a borane-catalyzed regio- and stereoselective hydrosilylation of internal ynamides for the first time. The scope of ynamide substrates and silane reactants was broad under mild reaction conditions, affording synthetically versatile β-silyl (Z)-enamide products. The observed stereoselectivity was reasoned to be due to the β-silicon effect on a postulated ketene iminium intermediate.
创建时间：
2016-12-12
