Preparation and Regioselective Magnesiation or Lithiation of Bis(trimethylsilyl)methyl-Substituted Heteroaryls for the Generation of Highly Functionalized Heterocycles
作者:Thomas Klatt、Veronika Werner、Marina G. Maximova、Dorian Didier、Yitzhak Apeloig、Paul Knochel
DOI:10.1002/chem.201500627
日期:2015.5.18
A wide range of bis(trimethylsilyl)methyl (BTSM)‐ substituted heteroaryl derivatives has been prepared by using Kumada–Corriu or Negishi cross‐coupling reactions. The regioselective lithiation or magnesiation of these building blocks bearing a bulky BTSM group by using magnesium or lithium 2,2,6,6‐tetramethylpiperidide bases followed by quenching reactions with different electrophiles provides various
通过使用Kumada-Corriu或Negishi交叉偶联反应已经制备了多种双(三甲基甲硅烷基)甲基(BTSM)取代的杂芳基衍生物。通过使用镁或锂2,2,6,6-四甲基哌啶碱,然后与不同的亲电试剂进行猝灭反应,这些带有庞大BTSM基团的结构单元的区域选择性锂化或镁化作用提供了各种功能化的N-,O-或S-杂环。此外,然后可以将BTSM基团转化为甲酰基,甲基或苯乙烯基,以使用各种高度官能化的杂芳族化合物。