A new tandem reaction leads to bicyclic cyclohexene derivatives with complete control of the relative configuration of the four chiral centers formed. The high diastereoselectivity is the consequence of an endo-selective Diels-Alder reaction followed by an Ireland-Claisen rearrangement that proceeds via a boat-like transition state.
一种新的串联反应可生成双环
环己烯衍
生物,并能完全控制所形成的四个手性中心的相对构型。高非对映选择性是内选择性 Diels-Alder 反应和爱尔兰-克莱森重排反应的结果。