Theses and Dissertations - UTB/UTPA
Date of Award
12-2013
Document Type
Thesis
Degree Name
Master of Science (MS)
Department
Chemistry
First Advisor
Dr. Jose Gutierrez
Second Advisor
Dr. Jason Parsons
Third Advisor
Dr. Yuanbing Mao
Abstract
The following systems: NaBH4/Fe3S4, NaBH4/Co3S4, NaBH4/NiS, NaBH4/CuS, and NaBH4/ZnS, were investigated for their nitro reducing abilities. Quantitative conversions were observed for the reduction of nitrobenzene with NaBH4/Co3S4 and NaBH4/NiS systems as opposed to only 9% conversion without any catalyst, representing a ten-fold increase in the reducing ability of NaBH4. In ethanol, various nitroaromatic compounds were also successfully reduced in moderate to high yields with 3 molar equivalents of NaBH4, demonstrating a mild alternative for the effective reduction of nitroaromatic compounds to their corresponding aryl amines. Screening of catalysts was carried out using gas chromatography. All products were characterized using 1 H NMR, 13C NMR, and FT-IR and melting point.
Granting Institution
University of Texas-Pan American
Comments
Copyright 2013 Samuel Piña Jr. All Rights Reserved.
https://www.proquest.com/dissertations-theses/reduction-nitroaromatic-compounds-with-sodium/docview/1501926134/se-2