Convenient synthesis of 1,3-dithiolane-2-thiones: cyclic trithiocarbonates as conformational locks
作者:Irina A. Dotsenko、Qinliang Zhao、Andreas H. Franz、Patrick Batoon、Nataliya M. Samoshina、Vyacheslav V. Samoshin
DOI:10.3998/ark.5550190.p008.671
日期:——
A series of novel 1,3-dithiolane-2-thiones, or cyclic trithiocarbonates, has been prepared by a new simple procedure: a treatment of the corresponding epoxides with the commercially available potassium ethyl xanthogenate, KSC(S)OEt. The stereochemistry of the products was determined by H NMR and in some cases by single-crystal X-ray data. Cyclohexane-based 1,3dithiolane-2-thiones revealed a trans-fusion
一系列新的 1,3-dithiolane-2-thiones 或环状三硫代碳酸酯已通过一种新的简单程序制备:用市售的乙基黄原酸钾 KSC(S)OEt 处理相应的环氧化物。产物的立体化学由 H NMR 确定,在某些情况下由单晶 X 射线数据确定。基于环己烷的 1,3dithiolane-2-thiones 揭示了碳环和杂环的转化。从单取代的环己烯氧化物获得的产物证明了取代基的轴向位置。因此,环氧化物转化为三硫代碳酸酯可用作锁定不稳定构象的环状化合物的方法。