Desymmetrization-based protocols for the synthesis of highly functionalized indeno-spirocyclopropanes and cyclopropa-fused indanes have been established through unexpected reactions triggered by the Corey-Chaykovsky reagent. These structures were further elaborated in one step to privileged scaffolds such as fluorenones, indenones, and naphthaphenones. For instance, an acid-catalyzed transformation
通过Corey-Chaykovsky试剂引发的意外反应,已经建立了基于去对称化的合成高度官能化的
茚-螺
环丙烷和
环丙烷稠合的
茚满的方案。将这些结构一步一步地加工成
荧光素,
茚三酮和
萘甲酮等特有的支架。例如,
腺苷-螺
环丙烷的酸催化转化通过均一纳扎罗夫型环化提供
芴酮,而
萘甲酮通过酸催化的
环丙烷开环/复古-迈克尔序列获得。