Preparation and characterization of naphthoquinone derivatives and isomers / Norzafneza Mohd Arriffin

Pyridinium salt 30 was prepared by reaction of pyridine with bromoketone. The bromoketone used was 4-phenylphenacylbromide 29. The percentage yield of the pyridinium salt obtained was 66.137%. The pyridinium salt was then reacted with menadione to form compound 33. There are two possible stereoisome...

Full description

Saved in:

Bibliographic Details
Main Author:	Mohd Arriffin, Norzafneza
Format:	Thesis
Language:	English
Published:	2007
Online Access:	https://ir.uitm.edu.my/id/eprint/101375/1/101375.pdf
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-uitm-ir.101375
record_format	uketd_dc
spelling	my-uitm-ir.1013752024-09-12T16:16:30Z Preparation and characterization of naphthoquinone derivatives and isomers / Norzafneza Mohd Arriffin 2007 Mohd Arriffin, Norzafneza Pyridinium salt 30 was prepared by reaction of pyridine with bromoketone. The bromoketone used was 4-phenylphenacylbromide 29. The percentage yield of the pyridinium salt obtained was 66.137%. The pyridinium salt was then reacted with menadione to form compound 33. There are two possible stereoisomers of the compound 33 as can be seen in predicted mechanisms of reaction and formation. This possible pathway occurs due to the tautomerisation of the menadione. The expected stereoisomers occur in compound 33 since it consists of two colours; yellow and red colours but the properties are the same in 1H NMR and 13C NMR. This result was obtained by comparing the NMR and IR results of the mixture from the previous study, red and yellow compound, with NMR and IR of pure yellow compound obtained. 2007 Thesis https://ir.uitm.edu.my/id/eprint/101375/ https://ir.uitm.edu.my/id/eprint/101375/1/101375.pdf text en public degree Universiti Teknologi MARA (UiTM) Faculty of Applied Sciences
institution	Universiti Teknologi MARA
collection	UiTM Institutional Repository
language	English
description	Pyridinium salt 30 was prepared by reaction of pyridine with bromoketone. The bromoketone used was 4-phenylphenacylbromide 29. The percentage yield of the pyridinium salt obtained was 66.137%. The pyridinium salt was then reacted with menadione to form compound 33. There are two possible stereoisomers of the compound 33 as can be seen in predicted mechanisms of reaction and formation. This possible pathway occurs due to the tautomerisation of the menadione. The expected stereoisomers occur in compound 33 since it consists of two colours; yellow and red colours but the properties are the same in 1H NMR and 13C NMR. This result was obtained by comparing the NMR and IR results of the mixture from the previous study, red and yellow compound, with NMR and IR of pure yellow compound obtained.
format	Thesis
qualification_level	Bachelor degree
author	Mohd Arriffin, Norzafneza
spellingShingle	Mohd Arriffin, Norzafneza Preparation and characterization of naphthoquinone derivatives and isomers / Norzafneza Mohd Arriffin
author_facet	Mohd Arriffin, Norzafneza
author_sort	Mohd Arriffin, Norzafneza
title	Preparation and characterization of naphthoquinone derivatives and isomers / Norzafneza Mohd Arriffin
title_short	Preparation and characterization of naphthoquinone derivatives and isomers / Norzafneza Mohd Arriffin
title_full	Preparation and characterization of naphthoquinone derivatives and isomers / Norzafneza Mohd Arriffin
title_fullStr	Preparation and characterization of naphthoquinone derivatives and isomers / Norzafneza Mohd Arriffin
title_full_unstemmed	Preparation and characterization of naphthoquinone derivatives and isomers / Norzafneza Mohd Arriffin
title_sort	preparation and characterization of naphthoquinone derivatives and isomers / norzafneza mohd arriffin
granting_institution	Universiti Teknologi MARA (UiTM)
granting_department	Faculty of Applied Sciences
publishDate	2007
url	https://ir.uitm.edu.my/id/eprint/101375/1/101375.pdf
_version_	1811769160921776128

Preparation and characterization of naphthoquinone derivatives and isomers / Norzafneza Mohd Arriffin

Similar Items