Ninhydrin bis-acetals give access to 8-ring lactones, benzocyclo-butenes and spirocyclic orthoanhydrides through photoextrusion and tandem photoextrusion reactions. Syntheses of fimbricalyxlactone B, isoshihunine and numerous biologically-relevant heterocycles show the value of the methods, while TA-spectroscopy and TD-DFT studies provide mechanistic insights on their wavelength dependence.
茚三
酮双
缩醛通过光挤出和
串联光挤出反应获得 8 环内
酯、
苯并环丁烯和螺环原酸酐。fibricalyxlactone B、异鼠宁和许多
生物相关杂环的合成显示了这些方法的价值,而
TA 光谱和 TD-DFT 研究提供了关于其波长依赖性的机理见解。