Palladium(II)–Schiff base complex supported on multi-walled carbon nanotubes: A heterogeneous and reusable catalyst in the Suzuki–Miyaura and copper-free Sonogashira–Hagihara reactions

•A heterogeneous, air-moisture stable and reusable catalyst is utilized for Suzuki–Miyaura reaction.•A copper- and phosphorous-free Sonogashira–Hagihara reaction in neat and aqueous media is reported.•The reactions are performed under a very low catalyst loading.

The air-moisture stable and recyclable palladium(II) Schiff base complex anchored to multi-walled carbon nanotubes (Pd–Schiff base@MWCNTs) behaves as a very efficient heterogeneous catalyst in the Suzuki–Miyaura coupling of arylboronic acids and aryl halides, and the Sonogashira–Hagihara reaction of aryl iodides and terminal alkynes in aqueous media to afford the corresponding C–C couplings in high yields.

Graphical abstractThe Pd–Schiff base@MWCNTs is used as a very efficient heterogeneous catalyst in the Suzuki–Miyaura coupling of arylboronic acids and aryl halides, and the Sonogashira–Hagihara reaction of aryl iodides and terminal alkynes to afford the corresponding C–C couplings in high yields.Figure optionsDownload full-size imageDownload as PowerPoint slide