Enantioselective Synthesis of Functionalised Decalones by Robinson Annulation of Substituted Cyclohexanones, Derived from R-(−)-Carvone
作者:Ben J.M Jansen、Cindy C.J Hendrikx、Nikolai Masalov、Gerrit A Stork、Tommi M Meulemans、Fliur Z Macaev、Aede de Groot
DOI:10.1016/s0040-4020(00)00110-1
日期:2000.3
catalysed conjugate addition of methyl magnesium iodide to cyclohexenones and trapping of the enolate as its trimethylsilyl enol ether, followed by a trityl hexachloroantimonate (TrSbCl6) catalysed Mukaiyama-reaction, was applied to R-(−)-carvone. This proved to be an efficient method for the preparation of C-2, C-3 functionalised chiral cyclohexanones. These compounds were converted into their α-cyano ketones
铜催化将碘化甲基镁的共轭加成到环己烯酮中并捕获烯醇化物作为其三甲基甲硅烷基烯醇醚,然后由三苯甲基六氯锑酸酯(TrSbCl 6)催化的Mukaiyama反应用于R -(-)-香芹酮。事实证明,这是制备C-2,C-3官能化手性环己酮的有效方法。这些化合物被转化为其α-氰基酮,然后与甲基乙烯基酮进行罗宾逊环化反应。研究了这些环行的范围和局限性。获得了一系列高度官能化的手性十萘烷,它们可以用作对映体纯净克拉多酮的总合成中的起始化合物。