Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1325353 | Journal of Organometallic Chemistry | 2011 | 4 Pages |
Heterogeneous Sonogashira coupling of terminal alkynes with aryl halides was studied over a polymer-supported macrocyclic Schiff base palladium complex. The cross-coupling reaction proceeded smoothly by adding a piperidine in water medium. The catalyst exhibited effective catalytic activities to afford the corresponding products in good to excellent yields under copper-free conditions. Furthermore, the catalyst could be easily recovered and reused for several times without a significant loss of its activity.
Graphical abstractHeterogeneous Sonogashira coupling of terminal alkynes with aryl halides was studied over a polymer-supported macrocyclic Schiff base palladium complex. The cross-coupling reaction proceeded smoothly by adding a piperidine in water medium. The catalyst exhibited effective catalytic activities to afford the corresponding products in good to excellent yields under copper-free conditions.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Efficient heterogeneous catalyst for the Sonogashira reactions was prepared. ► Polymer-supported Schiff base palladium complex is active for the copper-free reaction in water. ► The catalyst can be reused several times without a significant loss in its activity.