Synthesis and Reactivity of Solid-Supported Organotrifluoroborates in Suzuki Cross-Coupling
摘要:
Solid-supported organotrifluoroborates were prepared in high yields by ion exchange with Amberlyst resins. The reactivity of solid supported aryltrifluoroborates was evaluated in Suzuki Miyaura couplings with numerous aryl bromide partners. Electron-rich and -poor substituents were tolerated on both substrates, providing yields up to 90%. Examples of alkyl-, alkenyl-, alkynyl-, and heteroaryltrifluoborates were also successfully cross-coupled to aryl halides.
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
Catalytic Decarboxylative Cross‐Coupling of Aryl Chlorides and Benzoates without Activating
<i>ortho</i>
Substituents
作者:Jie Tang、Agostino Biafora、Lukas J. Goossen
DOI:10.1002/anie.201505843
日期:2015.10.26
substrates was overcome by holistic optimization of a bimetallic Cu/Pd catalyst system. The combination of a CuI/Me4phen decarboxylation catalyst and a [(MeCN)4Pd](OTf)2/XPhos cross‐coupling catalyst enables the synthesis of biaryls from inexpensive aryl chlorides and potassium benzoates regardless of their substitution pattern.
通过整体优化双金属Cu / Pd催化剂体系,克服了脱羧交叉偶联反应对邻位取代或杂环羧酸酯底物的限制。CuI / Me 4 phen脱羧催化剂和[(MeCN)4 Pd](OTf)2 / XPhos交叉偶联催化剂的组合,无论其取代方式如何,均能从廉价的芳基氯化物和苯甲酸钾合成联芳基。
Discovery and synthesis of a new bis(thiourea)-Pd pincer guided by ESI-MS/MS