Synthesis and Applications of Silyl 2-Methylprop-2-ene-1-sulfinates in Preparative Silylation and GC-Derivatization Reactions of Polyols and Carbohydrates
作者:Dean Marković、Wandji Augustin Tchawou、Irina Novosjolova、Sylvain Laclef、Dmitrijs Stepanovs、Māris Turks、Pierre Vogel
DOI:10.1002/chem.201504380
日期:2016.3.14
α‐d‐glucopyranose, the X‐ray crystallographic analysis of which is the first for a per‐O‐silylated hexopyranose. The per‐O‐silylation of polyols, hydroxy carboxylic acids, and carbohydrates with trimethylsilyl 2‐methylprop‐2‐ene‐1‐sulfinate was coupled with the GC analysis of nonvolatile polyhydroxy compounds both qualitatively and quantitatively.
三甲基硅烷基,三乙基甲硅烷,叔丁基二,三异丙和2-甲基丙-2-烯-1-亚磺酸盐是通过(CuOTf)制备2 ⋅C 6 ħ 6 -催化的与SO相应methallylsilanes的硅杂烯反应2在50℃下。在室温和中性条件下,受位阻,可差向异构和对碱敏感的醇可提供高收率和高纯度的相应甲硅烷基醚。作为甲硅烷基化反应的副产物(SO 2+异丁烯)易挥发,后处理简化为溶剂蒸发。所开发的方法可用于多元醇和糖苷的化学和区域选择性半保护以及不稳定的醛醇的甲硅烷基化。发达的试剂的高反应性是由合成所示的空间位阻per- ö -叔丁基二-α- d -glucopyranose,X射线结晶学分析,其中在第一对以每个ö -silylated六吡喃糖。所述per- Ô多元醇,羟基羧酸,碳水化合物和三甲基甲硅烷2-甲基丙-2-烯-1-亚磺酸酯偶联具有非易失多羟基的GC分析的-silylation定性和定量的化合物两者。