Physical Sciences and Mathematics Commons^™

Synthesis Of Pyridone Ligands And Iron Precursors For The Development Of Iron-Based Hydrogenation Catalysts, Becky Hanscam

Summer Research

Green chemistry is concerned with the development of safer, more efficient, and more environmentally acceptable chemical products and processes. An important aspect of green chemistry is the reduction of chemical waste. Catalysis is essential to achieving such a transformation. Hydrogenation is an example of an industrially important catalytic process. Hydrogenation reactions are common in the pharmaceutical industry as they provide a cost-effective and reliable approach to a wide range of compounds. However common hydrogenation catalysts are composed of expensive and toxic metals. The goal this research is to develop hydrogenation catalysts, based on iron, that will be less expensive and …

A Continuous Process Towards The Synthesis Of Quinolones, Stevara N. Clinton

Theses and Dissertations

Abstract

The development of quinolones is described from the first quinolone to the latest fluoroquinolones. Quinolones have generated considerable interest since their discovery because of their antibacterial capabilities. Analogs incorporating the 4-quinolone ring system comprise a largely expanding group of synthetic compounds. The development of antibacterial resistance has created the need for an efficient synthesis of quinolones that can be easily adapted toward the assembly of quinolone based antibacterial drugs.

There are several reported approaches to the 4-quinolone ring system. Many of these methods use expensive starting materials, require the removal of high boiling solvents, or use high temperature conditions …

I. Synthesis Of Ascarosides For Biological Evaluation And Ii. Development Of Visible Light-Promoted Selenofunctionalization And Grafting Of Aryl Iodides, Elizabeth Susan Conner Balapitiya

LSU Doctoral Dissertations

This dissertation focuses on analog synthesis for biological evaluation and visible light promoted method development. Chapter 1 centers upon the synthesis of Caenorhabditis elegans dauer pheromone analogs. C. elegans is a nematode which, in times of environmental stress, enters a dauer stage. Two highly conserved pathways, which play important roles in some diseases in higher organisms, monitor dauer formation: TGF-β and IGF-1. Dauer formation is triggered by the nematode’s chemosensation of the dauer pheromone, consisting of a group of previously-isolated ascarosides. These compounds differ in chain length, saturation, terminal functionality of side chain, ω vs. ω-1 oxygenation and presence of …