Results in Chemistry (Jan 2024)
Synthesis and characterization of a pyridinium IL-tagged Schiff base Pd(II)-complex: An efficient catalyst for the Suzuki reaction at room temperature under aerobic conditions
Abstract
To address some drawbacks associated with the Suzuki reaction herein we report a new pyridinium IL-tagged Schiff base Pd(II)-complex. First pyridinium IL was synthesized and condensed with salicylaldehyde to prepare a new IL-tagged Schiff base which on metalation with Pd(OAc)2 gives pyridinium IL-tagged Schiff base Pd(II)-complex. The synthesized compounds were then well characterized by Elemental analysis, UV–Visible, Magnetic Moment, IR, NMR, HRMS, MALDI, and PXRD tools. A square planar geometry was assigned for the Pd(II)-complex based on the spectroscopic and other data obtained. The catalytic activity of the Pd(II)-complex was then appraised for the Suzuki reactions in EtOH under aerobic conditions at room temperature with a time frame of 1 h. The results show that the Pd-complex facilitates the reaction under the given condition efficiently to produce a high yield of the products with low catalyst loading. And more importantly, the Pd-complex could be recovered easily and recycled up to six runs with minimum loss in its catalytic activity.
