Synthesis, characterization and catalytic activity of palladium(ii)-1,3-bis(phenylmethyl) benzimidazolium bromide in heck reaction / Mohamad Azamuddin Mustakim

Palladium is used as a catalyst for carbon-carbon coupling such as in Heck, Stille and Suzuki reaction. This research reports on a palladium catalyst for Heck reaction namely palladium(II)-1-3-bis(phenylmethyl) benzimidazolium bromide. The Nheterocyclic carbene (NHC) ligand was prepared by reacting...

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Main Author:	Mustakim, Mohamad Azamuddin
Format:	Student Project
Language:	English
Published:	Faculty of Applied Sciences 2017
Subjects:	QD Chemistry Chemical elements
Online Access:	http://ir.uitm.edu.my/id/eprint/26757/ http://ir.uitm.edu.my/id/eprint/26757/1/PPb_MOHAMAD%20AZAMUDDIN%20MUSTAKIM%20AS%20N%2017_5.pdf

id	uitm-26757
recordtype	eprints
spelling	uitm-267572019-12-16T08:28:36Z http://ir.uitm.edu.my/id/eprint/26757/ Synthesis, characterization and catalytic activity of palladium(ii)-1,3-bis(phenylmethyl) benzimidazolium bromide in heck reaction / Mohamad Azamuddin Mustakim Mustakim, Mohamad Azamuddin QD Chemistry Chemical elements Palladium is used as a catalyst for carbon-carbon coupling such as in Heck, Stille and Suzuki reaction. This research reports on a palladium catalyst for Heck reaction namely palladium(II)-1-3-bis(phenylmethyl) benzimidazolium bromide. The Nheterocyclic carbene (NHC) ligand was prepared by reacting benzyl bromide with benzimidazole while the palladium catalyst was prepared by reacting palladium chloride with the synthesized NHC ligand. The palladium catalyst has been successfully synthesized and characterized by using Fourier transform infrared (FTIR), 1 H and 13C nuclear magnetic resonance (NMR), UV-Vis spectroscopy and CHNS elemental analysis. FTIR spectra confirm the present of important group in the synthesized complex such as C=N group. NMR and CHNS elemental analysis results also supported in the confirmation of the complex structure. UV -Vis spectroscopy results showed the absorption maxima of Pd2 + cation and NHC ligand. The blue shifting in UV-Vis spectra for palladium catalyst give an evidence of the successfulness of the complexation. The preliminary complexation between Pd2+ cation and N-heterocyclic carbene (NHC) ligand shows stoichiometric of 1 Pd2+ cation to 2 NHC ligand. The catalytic activity of the palladium catalyst was studied on Heck carbon-carbon coupling reaction between l-bromo-4-nitrobenzene and styrene. Two parameters of the reaction were studied which are different catalyst loading and effect of different reaction time. The results show that excellent catalytic activity is achieved using catalyst loading of 0.5 mmol % and 60 minutes of reaction time. Faculty of Applied Sciences 2017 Student Project NonPeerReviewed text en http://ir.uitm.edu.my/id/eprint/26757/1/PPb_MOHAMAD%20AZAMUDDIN%20MUSTAKIM%20AS%20N%2017_5.pdf Mustakim, Mohamad Azamuddin (2017) Synthesis, characterization and catalytic activity of palladium(ii)-1,3-bis(phenylmethyl) benzimidazolium bromide in heck reaction / Mohamad Azamuddin Mustakim. [Student Project] (Submitted)
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Teknologi MARA
building	UiTM Institutional Repository
collection	Online Access
language	English
topic	QD Chemistry Chemical elements
spellingShingle	QD Chemistry Chemical elements Mustakim, Mohamad Azamuddin Synthesis, characterization and catalytic activity of palladium(ii)-1,3-bis(phenylmethyl) benzimidazolium bromide in heck reaction / Mohamad Azamuddin Mustakim
description	Palladium is used as a catalyst for carbon-carbon coupling such as in Heck, Stille and Suzuki reaction. This research reports on a palladium catalyst for Heck reaction namely palladium(II)-1-3-bis(phenylmethyl) benzimidazolium bromide. The Nheterocyclic carbene (NHC) ligand was prepared by reacting benzyl bromide with benzimidazole while the palladium catalyst was prepared by reacting palladium chloride with the synthesized NHC ligand. The palladium catalyst has been successfully synthesized and characterized by using Fourier transform infrared (FTIR), 1 H and 13C nuclear magnetic resonance (NMR), UV-Vis spectroscopy and CHNS elemental analysis. FTIR spectra confirm the present of important group in the synthesized complex such as C=N group. NMR and CHNS elemental analysis results also supported in the confirmation of the complex structure. UV -Vis spectroscopy results showed the absorption maxima of Pd2 + cation and NHC ligand. The blue shifting in UV-Vis spectra for palladium catalyst give an evidence of the successfulness of the complexation. The preliminary complexation between Pd2+ cation and N-heterocyclic carbene (NHC) ligand shows stoichiometric of 1 Pd2+ cation to 2 NHC ligand. The catalytic activity of the palladium catalyst was studied on Heck carbon-carbon coupling reaction between l-bromo-4-nitrobenzene and styrene. Two parameters of the reaction were studied which are different catalyst loading and effect of different reaction time. The results show that excellent catalytic activity is achieved using catalyst loading of 0.5 mmol % and 60 minutes of reaction time.
format	Student Project
author	Mustakim, Mohamad Azamuddin
author_facet	Mustakim, Mohamad Azamuddin
author_sort	Mustakim, Mohamad Azamuddin
title	Synthesis, characterization and catalytic activity of palladium(ii)-1,3-bis(phenylmethyl) benzimidazolium bromide in heck reaction / Mohamad Azamuddin Mustakim
title_short	Synthesis, characterization and catalytic activity of palladium(ii)-1,3-bis(phenylmethyl) benzimidazolium bromide in heck reaction / Mohamad Azamuddin Mustakim
title_full	Synthesis, characterization and catalytic activity of palladium(ii)-1,3-bis(phenylmethyl) benzimidazolium bromide in heck reaction / Mohamad Azamuddin Mustakim
title_fullStr	Synthesis, characterization and catalytic activity of palladium(ii)-1,3-bis(phenylmethyl) benzimidazolium bromide in heck reaction / Mohamad Azamuddin Mustakim
title_full_unstemmed	Synthesis, characterization and catalytic activity of palladium(ii)-1,3-bis(phenylmethyl) benzimidazolium bromide in heck reaction / Mohamad Azamuddin Mustakim
title_sort	synthesis, characterization and catalytic activity of palladium(ii)-1,3-bis(phenylmethyl) benzimidazolium bromide in heck reaction / mohamad azamuddin mustakim
publisher	Faculty of Applied Sciences
publishDate	2017
url	http://ir.uitm.edu.my/id/eprint/26757/ http://ir.uitm.edu.my/id/eprint/26757/1/PPb_MOHAMAD%20AZAMUDDIN%20MUSTAKIM%20AS%20N%2017_5.pdf
first_indexed	2023-09-18T23:17:25Z
last_indexed	2023-09-18T23:17:25Z
_version_	1777419204709842944

Synthesis, characterization and catalytic activity of palladium(ii)-1,3-bis(phenylmethyl) benzimidazolium bromide in heck reaction / Mohamad Azamuddin Mustakim

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