Palladium-Catalyzed Cross-Coupling Reactions of Substituted Aryl(dimethyl)silanols
作者:Scott E. Denmark、Michael H. Ober
DOI:10.1002/adsc.200404204
日期:2004.12
cross-coupling of aryl(dimethyl)silanols with substituted aryl halides. Extensive optimization studies led to the identification of key variables (solvent, catalyst, additive, and hydration level) that influence the rate and selectivity of the process. Manipulation of these factors provides an effective coupling method of wide scope and generality. Electron-rich aryl(dimethyl)silanols undergo cross-coupling
碳酸铯和氢氧化铯一水合物是钯催化的芳基(二甲基)硅烷醇与取代的芳基卤化物的交叉偶联的有效活化剂。广泛的优化研究导致对影响过程速率和选择性的关键变量(溶剂,催化剂,添加剂和水合水平)的识别。对这些因素的处理提供了一种广泛范围和通用性的有效耦合方法。对于所需的交叉偶联产物,富电子的芳基(二甲基)硅烷醇与芳基碘化物和芳基溴化物进行高产率和高选择性的交叉偶联。或者,当用一水合氢氧化铯活化时,用贫电子或邻位取代的芳基(二甲基)硅烷醇可以获得高产率的交叉偶联产物。