Once difficult to obtain, the title compounds can be prepared in virtually enantiomerically pure form with a bis(triorganostannyl) zinc reagent (see scheme). Subsequent diastereoselective thermal (left) and Lewis acid promoted reactions (right) illustrate the synthetic potential of these compounds.
一旦难以获得,就可以用双(三
有机锡烷基)
锌试剂以几乎对映体纯的形式制备标题化合物(参见方案)。随后的非对映选择性热反应(左)和
路易斯酸促进的反应(右)说明了这些化合物的合成潜力。