Aerobic intramolecular aminothiocyanation of unactivated alkenes promoted by in situ generated iodine thiocyanate
作者:Yangyang Feng、Muhammad Ijaz Hussain、Xiaohui Zhang、Jian Shi、Wen Hu、Yan Xiong
DOI:10.1016/j.tet.2018.04.023
日期:2018.5
Aerobic intramolecular aminothiocyanation of unactivated alkenes has been developed by in situ generated iodine thiocyanate under open-flask conditions. This protocol provides a concise and efficient method for synthesizing SCN-containing pyrrolidine, piperidine and indoline derivatives with isolated yields of up to 87%. Furthermore, mixing iodine and sodium thiocyanate with oxygen afforded iodine
未活化烯烃的好氧分子内氨基硫氰化反应是通过在烧瓶条件下原位生成的硫氰酸碘盐开发的。该方案为合成含SCN的吡咯烷,哌啶和二氢吲哚衍生物提供了一种简洁有效的方法,分离产率高达87%。此外,将碘和硫氰酸钠与氧气混合,得到硫氰酸碘盐(ISCN)和二硫氰酸根合碘酸盐[I(SCN)2 ] -通过液相色谱质谱法证实。机理研究表明,碘鎓离子和sulf离子中间体可能参与了这一转变。