available from secondary propargylic alcohols via a two-step sequence involving highly regio- and stereoselective Pd(0)-catalyzed hydrostannation followed by mild oxidation (TPAP). The methodology has been applied to the synthesis of enantiomerically pure enone 12 which is a key intermediate for the total synthesis of zoanthamine, a structurally complex marine natural product.
(E)-β-三烷基
锡烷基-α,β-不饱和酮很容易从二级炔
丙醇中通过两步序列获得,该过程包括高度区域选择性和立体选择性的Pd(0)催化的
水锡锡化反应,然后进行轻度氧化(
TPAP)。该方法已用于对映体纯的烯酮12的合成,这是用于整体合成结构复杂的海洋
天然产物zoanthamine的关键中间体。