Atom Efficient Magnesiation of
<i>N</i>
‐Substituted Alkyl Indoles with a Mixed Sodium‐Magnesium Base
作者:Michael A. Stevens、Victoria L. Blair
DOI:10.1002/ejic.201701317
日期:2018.1.10
This study presents the alkali metal mediated magnesiation (AMMMg) of three N‐alkylated indoles with the mixed Na/Mg base [(TMEDA)Na(TMP)2Mg(CH2SiMe3)] 1 (TMEDA = N,N,N′,N′‐tetramethylethylenediamine, TMP = 2,2,6,6‐tetramethylpiperidine). All three magnesiated indoles have been successfully characterised by single‐crystal X‐ray diffraction and solution state NMR studies, whereas iodolysis and Pd‐catalysed
本研究提出了碱金属介导的镁化(AMM镁)三Ñ烷基化吲哚与混合的Na / Mg的碱[(TMEDA)的Na(TMP)2 Mg的(CH 2森达3)] 1(TMEDA = Ñ,Ñ,N',N'-四甲基乙二胺,TMP = 2,2,6,6-四甲基哌啶)。通过单晶X射线衍射和溶液态NMR研究已成功表征了所有三个镁化的吲哚,而碘化和Pd催化的交叉偶联已得到了研究。所述的立体性质ñ -烷基改变的反应性和效率1给任一原子高效二钠tetraindol -2- ylmagnesiates [(钠TMEDA)2 Mg的(α-C 9 H ^ 8 N)4 ] 2和[(钠TMEDA)2 Mg的(α-C 10 H ^ 11 N)4 ] 3或[(TMEDA)Na(TMP)(α- C11 H 12 N)Mg(TMP)] 4,其中仅一个吲哚分子被选择性去质子化。