A one-pot transformation of biaryl dicarboxylic acids to (NH)-phenanthridinone derivatives based on a Curtiusrearrangement and subsequent basic hydrolysis was developed. This method is also applicable for the preparation of optically active amide-functionalized [7]helicene-like molecules. Furthermore, aza[5]helicene derivatives with a phosphate moiety were isolated as a product of the Curtius rearrangement
开发了基于 Curtius 重排和随后的碱性水解的联芳基二羧酸向 ( NH )-菲啶酮衍生物的一锅法转化。该方法也适用于光学活性酰胺官能化[7]类螺烯分子的制备。此外,在带有硫属元素原子的底物的情况下,具有磷酸盐部分的氮杂[5]螺烯衍生物被分离为 Curtius 重排步骤的产物。通过 X 射线衍射分析揭示了这些产品的立体结构,表明硫属元素键合和磷元素键合相互作用可能有助于它们的稳定性。进一步研究了类螺烯分子的构型稳定性及其手性。