Microwave-Assisted Suzuki Coupling Reactions with an Encapsulated Palladium Catalyst for Batch and Continuous-Flow Transformations
作者:Ian R. Baxendale、Charlotte M. Griffiths-Jones、Steven V. Ley、Geoffrey K. Tranmer
DOI:10.1002/chem.200501400
日期:2006.5.24
This article describes the design, optimisation and development of a Suzuki cross-coupling protocol mediated by an efficient palladium-encapsulated catalyst (Pd EnCat) under microwave irradiation. The methodology has been used in both batch mode for classical library preparation and in continuous-flow applications furnishing multigram quantities of material. Described is a method that uses direct focused
本文介绍了在微波辐射下由高效钯封装的催化剂(Pd EnCat)介导的Suzuki交叉偶联方案的设计,优化和开发。该方法已在批处理模式下用于经典文库制备,并已在连续流应用中使用,以提供数克的材料。描述了一种在施加外部冷却源的同时使用直接聚焦微波加热的方法。这使得可以在整个反应期间保持低于正常的总体温度,从而导致反应产物的总产率和纯度的显着提高。关于固定催化剂体系的延长寿命和增强的反应性,讨论了该新颖的加热方案的其他方面。