Organosilicon compounds are important reagents and synthetic intermediates that play a key role in the construction of new materials and complex products. Here we show a highly diastereoselective rhodium-catalyzed cycloisomerization of 1,6-dienes, in which the use of (EtO)3SiH accelerates the intramolecular cyclization reaction to afford a novel spiro-fused succinimide and pyrazolone derivatives in moderate
有机硅化合物是重要的试剂和合成中间体,在新材料和复杂产品的构建中起着关键作用。在这里,我们展示了一种高度非对映选择性的
铑催化的 1,6-二烯环化异构化,其中使用 (EtO) 3 SiH 加速了分子内环化反应,以中等至优异的产率提供了新型螺稠合琥珀
酰亚胺和
吡唑啉酮衍
生物。单一的非对映异构体。所提出的机制涉及来自氢
硅烷的活性 Rh-H 物质,该物质是该螺型环异构化反应中的 H 供体。