A phenyldithiocarbazate-functionalized polyvinyl chloride resin-supported Pd(II) complex as an effective catalyst for solvent- and copper-free Sonogashira reactions under aerobic conditions

•The catalyst was prepared by immobilization of palladium complex on PVC and was fully characterized.•The catalyst exhibited efficient catalytic activity in Sonogashira reactions under aerobic condition.•The catalyst can be reused several times without a noticeable change in activity.

The PVC-supported phenyldithiocarbazate palladium complex was prepared and characterized. The catalyst exhibits excellent catalytic activity and stability for the Sonogashira coupling reaction under ambient conditions. Various terminal alkynes were coupled with a number of aryl halides in the presence of 1.0 mol% of the catalyst to afford the corresponding products in high yields. Furthermore, the heterogeneous catalyst can be readily recovered by simple filtration and reused for several times without a significant loss in its activity.

Graphical abstractPVC-supported phenyldithiocarbazate palladium complex was found to be an efficient catalyst in the palladium-catalyzed copper-free Sonogashira reactions of aryl halides under aerobic conditions.Figure optionsDownload full-size imageDownload as PowerPoint slide