Preparation, X-ray Structure, and Reactivity of 2-Iodylpyridines: Recyclable Hypervalent Iodine(V) Reagents
作者:Akira Yoshimura、Christopher T. Banek、Mekhman S. Yusubov、Victor N. Nemykin、Viktor V. Zhdankin
DOI:10.1021/jo200163m
日期:2011.5.20
prepared by oxidation of the respective 2-iodopyridines with 3,3-dimethyldioxirane. Structures of 2-iodylpyridine, 2-iodyl-3-isopropoxypyridine, and 2-iodyl-3-propoxypyridine were established by single-crystal X-ray diffraction analysis. 2-Iodyl-3-propoxypyridine has moderate solubility in organic solvents (e.g., 1.1 mg/mL in acetonitrile) and can be used as a recyclable reagent for oxidation of sulfides
通过用3,3-二甲基二环氧乙烷将各自的2-碘吡啶氧化,可以制备2-碘吡啶和3-烷氧基-2-碘吡啶的四个实例。通过单晶X射线衍射分析建立2-碘基吡啶,2-碘基-3-异丙氧基吡啶和2-碘基-3-丙氧基吡啶的结构。2-碘-3-丙氧基吡啶在有机溶剂中具有中等溶解度(例如在乙腈中为1.1 mg / mL),可用作硫化物和醇类氧化的可循环试剂。该试剂的还原形式2-碘-3-丙氧基吡啶可通过用稀硫酸处理而有效地从反应混合物中分离出来,并通过加入氢氧化钠水溶液从酸性水溶液中回收。