Synthesis and dynamic stereochemistry of 4-aryl-thiomorpholine-3,5-dione derivatives
作者:Joanna Szawkało、Jan K. Maurin、Franciszek Pluciński、Zbigniew Czarnocki
DOI:10.1016/j.molstruc.2014.08.046
日期:2015.1
structures of seven compounds were established on the basis of X-ray crystallography. Stable at room temperature diastereomers were detected for (2-phenyl)-substituted derivatives using 1H NMR. The dynamic stereochemistry of compound 36 was studied with variable-temperature 1H NMR and the mechanism of diastereomers interconversion was proposed on the basis of quantum chemical calculations.
摘要 合成了一系列新的N-芳基取代的硫代吗啉-3,5-二酮。基于 X 射线晶体学建立了七种化合物的晶体结构。使用 1 H NMR 检测到 (2-苯基)-取代衍生物在室温下稳定的非对映异构体。用变温1H NMR研究了化合物36的动态立体化学,并在量子化学计算的基础上提出了非对映体互变的机理。