Poly (methyl methacrylate)-graphene oxide supported palladium catalyst: A ligand free protocol for Suzuki and Heck coupling reaction in water medium

Abstract

A green and efficient approach for the ligand free Suzuki–Miyaura and Mizoroki–Heck C–C cross coupling reaction using low palladium loaded Graphene oxide-polymer composite catalyst has been described. High yields, easy work-up, easy availability and handling, eco-friendly and reusability of the catalysts are the main aspects of the present method. The simplicity of the entire sequence has made the protocol meritorious as a reasonable contribution to the existing methods in the field of substituted biphenyls and olefins. The supported heterogeneous catalyst was characterized using HRTEM, ICP-AES, PXRD, XPS, TGA, and FT-IR spectroscopy.

Graphical Abstract

Keywords:

• Aqueous medium
• GO-PMMA-Pd catalyst
• Heck reaction
• ligand free
• Suzuki–Miyaura coupling

Acknowledgments

The authors thank IIT Bombay for ICP-AES analysis, IACS Kolkata for PXRD analysis and XPS analysis, NEHU (SAIF) for TEM analysis.

Additional information

Funding

One of the authors (PB) is thankful to council of scientific and industrial research (CSIR), NEW DELHI, INDIA, New Delhi for financial support.