Reductive alkylation of various 4-cyano-2-cyclohexenones, readily available from α-cyano ketones via a Robinson annulation process, gave rise to the corresponding 2,2-disubstituted-3-cyclohexenone derivatives in a completely regioselective manner. Application of this methodology resulted in an efficient synthesis of the marine natural product nanaimoal in racemic form.
各种4-
氰基-2-
环己烯酮的还原烷基化,很容易通过罗宾逊成环过程从α-
氰基酮获得,以完全区域选择性的方式产生相应的2,2-二取代-3-
环己烯酮衍
生物。该方法的应用导致了外消旋形式的海洋
天然产物 nanaimoal 的有效合成。