Flow-Based, Cerium Oxide Enhanced, Low-Level Palladium Sonogashira and Heck Coupling Reactions by Perovskite Catalysts
作者:Claudio Battilocchio、Benjamin N. Bhawal、Rajeev Chorghade、Benjamin J. Deadman、Joel M. Hawkins、Steven V. Ley
DOI:10.1002/ijch.201300049
日期:2014.4
A flow chemistry procedure for Sonogashira and Heck cross‐coupling reactions using a low‐level palladium perovskite catalyst (LaFe0.95Pd0.05O3) deposited on cerium oxide is reported. The catalyst was generated in situ at high temperature using a flow platform. The system could be applied to a wide range of functionalised substrates, allowing clean and fast delivery of the products within a few minutes
使用低级钙钛矿型钯催化剂(LaFe 0.95 Pd 0.05 O 3据报道)沉积在氧化铈上。使用流动平台在高温下原位产生催化剂。该系统可应用于各种功能化基材,在用硫脲聚合物(QP-TU)和磺酸树脂(QP-SA)清除后,可以在几分钟(10-30分钟)内清洁,快速地交付产品。 )。使用在线蒸发器/溶剂转换设备使我们能够回收溶剂并将物料运输到下一阶段。催化剂可以连续使用至少24小时,而催化效率没有任何明显的降低。在一个实例中,该系统被缩放以递送10mmol的产物。