Palladium-catalyzed hydrogenation with use of ionic liquid bis(2-hydroxyethyl)ammonium formate [BHEA][HCO2] as a solvent and hydrogen source
作者:Hideyuki Suzuki、Seiki Yoshioka、Ami Igesaka、Hiromi Nishioka、Yasuo Takeuchi
DOI:10.1016/j.tet.2013.05.103
日期:2013.8
We designed ionic liquid bis(2-hydroxyethyl)ammonium formate [BHEA][HCO2] for use as a solvent and hydrogen donor for hydrogenation. Catalytic hydrogenation of aromatic ketones, nitro groups, and olefins with PdCl2 in [BHEA][HCO2] generated the corresponding reduction products. Selective reduction of aromatic ketones over aliphatic ketones was observed. Hydrogenolysis of benzyl ethers and benzyl amines
我们设计了离子液体双(2-羟乙基)甲酸铵[BHEA] [HCO 2 ]用作溶剂和氢化的氢供体。在[BHEA] [HCO 2 ]中用PdCl 2催化芳香族酮,硝基和烯烃的加氢反应生成了相应的还原产物。观察到芳族酮相对于脂族酮的选择性还原。还进行了苄基醚和苄基胺的氢解。在温和和不可燃的条件下,所有这些反应均以良好的收率成功完成。此外,离子液体和Pd源可以重复使用几次。