Rapid Generation of Molecular Complexity: Synthesis of α-Hydroxyallenes Using Functionalized Grignard Reagents
作者:Norbert Krause、Carl Deutsch、Anja Hoffmann-Röder、Axel Domke
DOI:10.1055/s-2007-970768
日期:2007.3
reagents in the copper-mediated S N 2′ substitution of propargylic oxiranes leads to structurally complex α-hydroxyallenes, usually with high yield and diastereoselectivity. Further transformations, such as gold-catalyzed cycloisomerization to 2,5-dihydrofurans and palladium-catalyzed coupling reactions, demonstrate the high potential of these compounds for the rapid generation of molecular complexity
在铜介导的炔丙基环氧乙烷的 SN 2' 取代中使用官能化的芳基-格氏试剂导致结构复杂的 α-羟基丙二烯,通常具有高产率和非对映选择性。进一步的转化,例如金催化的环异构化为 2,5-二氢呋喃和钯催化的偶联反应,证明了这些化合物在快速生成分子复杂性方面的巨大潜力。