作者:William P.D. Goldring、Samira Bouazzaoui、John F. Malone
DOI:10.1016/j.tetlet.2010.12.086
日期:2011.3
constructed using a [4 + 2]-cycloaddition approach from α-methylene indanone dienophiles, which were elaborated from 4-chromanone in a number of steps including a key rearrangement process. This type of spiro-fused structure forms the central core ring system found in natural products such as coleophomone A. The cycloaddition reactions using an α-methylene indanone dienophile led to the exo diastereoisomer
使用[4 + 2]-环加成法由α-亚甲基茚满二烯亲二烯构建螺旋稠合的茚满酮,α-亚甲基茚满二烯通过一系列步骤(包括关键的重排过程)从4-chromanone精制而成。这种类型的螺旋稠合结构形成了天然产物(例如油菜酮A)中发现的中心核心环系统。使用α-亚甲基茚满二烯二烯的环加成反应导致exo非对映异构体成为主要的环加合物,而基于1,4-二酮亲双烯体主要导致内非对映异构体。