Selective Pd-catalyzed hydrogenation of 3,3-diphenylallyl alcohol: Efficient synthesis of 3,3-diarylpropylamine drugs diisopromine and feniprane
作者:Thiago S. Claudino、Jackson D. Scholten、Adriano L. Monteiro
DOI:10.1016/j.catcom.2017.08.025
日期:2017.12
The Pd-catalyzed selective hydrogenation of CC double bond in (3,3-diphenylallyl)diisopropylamine or 3,3-diphenylallyl alcohol was evaluated using different catalytic systems [Pd/C, Pd(OAc)2/ionic liquid, isolated Pd(0) nanoparticles]. For the (3,3-diphenylallyl)diisopropylamine, hydrogenolysis is preferred over hydrogenation, and only moderate selectivities were obtained for the desired product. However
C的Pd-催化的选择性氢化使用不同的催化体系[的Pd / C,将Pd(OAc)在(3,3- diphenylallyl)二异丙基胺或3,3- diphenylallyl醇C双键进行评价2 /离子液体,分离的Pd( 0)纳米粒子]。对于(3,3-二苯基烯丙基)二异丙胺,优选氢解而不是氢化,并且对于所需产物仅获得中等选择性。但是,使用分离的Pd(0)纳米粒子在温和条件下氢化3,3-二苯基烯丙基醇可获得完全转化率和100%选择性。这一成功的策略使二异丙胺和芬尼普兰药物的有效合成成为可能,并为制备其他具有生物活性的化合物开辟了新的可能性。