Synthesis of palladium nanoparticles using triazolium based ionic liquids: A reusable catalyst for addition of arylboronic acids to nitrostyrenes

Abstract

Formation of stable and small-sized palladium nanoparticles of diameter 9.4 nm was accomplished by a simple heating of Pd(OAc)₂ in 1-octyl-1,2,4-triazolium trifluoroacetate ionic liquid under standard atmospheric hydrogen pressure. Palladium nanoparticles were characterized by XRD, SEM, TEM, and EDX analysis techniques. The application of an addition reaction of arylboronic acid to nitrostyrenes provided diaryl-substituted products in high yields. This Pd-NPs are capable of being recycled by a simple decantation procedure and reusable up to four times without any effect on its catalytic activity.

Graphical Abstract

Keywords:

• Addition reaction
• arylboronic acid
• ionic liquids
• nitrostyrene
• Pd nanoparticles

Acknowledgement

Dr. C. R. K. acknowledges the financial assistance from Science and Engineering Research Board (SERB), Department of Science and Technology (DST), India, under scheme Fast Track Young Scientist (SB/FT/CS-086/2013). Authors are grateful to the management of Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology for their infrastructure support to our laboratory.

Disclosure statement

The authors announce no competing interest.