作者:Kazuhiko Semba、Masataka Shinomiya、Tetsuaki Fujihara、Jun Terao、Yasushi Tsuji
DOI:10.1002/chem.201300443
日期:2013.5.27
The highly selective copper‐catalyzed hydroboration of allenes has been developed. Allylboranes and alkenylboranes were selectively prepared by the judicious choice of catalytic species (copper hydride and boryl copper). Furthermore, two types of alkenylboranes could be selectively synthesized by the choice of an appropriate ligand. Mechanistic studies confirmed that the protonation of a (Z)‐σ‐allyl
已经开发出高度选择性的铜催化的艾伦硼氢化。通过明智地选择催化物种(氢化铜和硼基铜)选择性地制备烯丙基硼烷和烯基硼烷。此外,可以通过选择合适的配体来选择性地合成两种类型的烯基硼烷。机理研究证实,(Z)-σ-烯丙基铜的质子化是这些反应的关键步骤,该质子是通过单晶X射线衍射分离并在结构上表征的。除丙二烯外,该方法还适用于1,3-二烯衍生物的选择性加氢硼化反应,制得烯丙基硼烷和高烯丙基硼烷。