A modification of polystyrene supported palladium(II) complex as effective catalyst for Mizoroki‐Heck reaction
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Date
2016
Journal Title
Journal ISSN
Volume Title
Publisher
Journal of Scientific Research and Development
Abstract
Chloromethylated polystyrene cross-linked with 5% divinylbenzene (PS5) has been successfully
functionalized with phenyldithiocarbazate ligand (PS5-PDC). The polymer was used as solid support for anchoring
the palladium metal (PS5-PDC-Pd). The properties of dark colored polymer, impregnated with palladium complex
was then characterized by various spectroscopic and analytical techniques namely Fourier Transform Infrared
(FTIR), elemental chemical analysis CHNS, Thermogravimetric analysis (TGA), BET surface area, powder X-ray
Diffraction (XRD), Inductively Coupled Plasma-Optical Emission Spectrometer (ICP-OES) and Scanning Electron
Microscopy/Energy Dispersive X-ray (SEM-EDX). Supported catalyst of PS5-PDC-Pd was then tested in the
Mizoroki-Heck reaction of 4-bromoacetophenone with methyl acrylate. The reaction was monitored by GC-FID.
Preliminary results showed that supported catalyst could be used in at least three consecutive Mizoroki-Heck
reactions with the same catalytic activity.
Description
Keywords
Polystyrene, Supported catalyst, Mizoroki-Heck reaction