Convergent Synthesis, Resolution, and Chiroptical Properties of Dimethoxychromenoacridinium Ions
收藏Figshare2016-02-17 更新2026-04-29 收录
下载链接：
https://figshare.com/articles/dataset/Convergent_Synthesis_Resolution_and_Chiroptical_Properties_of_Dimethoxychromenoacridinium_Ions/2273332
下载链接
链接失效反馈官方服务：
资源简介：
Cationic azaoxa[4]helicenes can be prepared in a single step from a common xanthenium precursor by addition of nucleophilic amines under monitored conditions (160 °C, 2 min, MW). The (−)-(M) and (+)-(P) enantiomers can be separated by chiral stationary-phase chromatography. Determination of the absolute configuration and racemization barrier (ΔG⧧ (433 K) 33.3 ± 1.3 kcal·mol–1) was achieved by VCD and ECD spectroscopy, respectively.
创建时间：
2016-02-17
