Written by Nicolas Introduction MnIII complexes are used extensively in biochemistry, especially when describing the evolution of oxygen in photosynthetic plant cells,1 Manganese catalysis,2 and ribonucleotide reductase.3 The values of transforming a metal halide into a soluble metal ligand complex in organic solvents is extremely beneficiary to such fields of research. The specific metal ligand complex produced entails Manganese3+, a tetradentate ligand N,N’-bis(salicylidene)-1,3-diaminopropane, (Salpn), as well as the bidentate acetyl-acetonate, (AcAc). Herein we report the synthesis of the H2Salpn ligand […]
Written by Brian Description: In this lab we tested the premise that if an organic reaction involving functional group interconversion (FGI) works on one molecule, chemists anticipate that the reaction will work to do FGI on other related molecules. Individually for this lab I was assigned 2-heptanol as my alcohol. To oxidize this secondary alcohol to attempt to make a ketone we first obtained a 3-neck round-bottom flask. This was then fitted with a thermometer so that we could read […]
Written by Jennifer Purpose The experiment was carried out to extract caffeine from tea leaves (Isolation of Caffeine). The experimental procedure was carried out in four weeks. In the first week, two tea bags were used together with anhydrous sodium carbonate to make a solution with water. The tea solution was allowed to cool. In the second week, dichloromethane was added to the solution in three portions in a separatory funnel which formed two layers and the aqueous caffeine layer […]
Written by Ryan Introduction The purpose of this experiment is to investigate the stereoselectivity of various reducing agents in the reduction of a carbonyl group. The first part of this experiment will focus on the stereoselectivity of sodium borohydride, lithium aluminum hydride, and lithium tri-sec-butylborohydride (L-selectride) in the reduction of 4-tert-butylcyclohexanone.1 The second part of this experiment will focus on the stereoselectivity of saccharomyces cerevisiae (baker’s yeast) in the reduction of ketone in ethyl acetoacetate.2 The stereoselectivity of each reducing […]
Written by Lena ABSTRACT In this experiment, we synthesized luminol and used the product to observe how chemiluminescence works. Our starting material was 5-nitro-2,3-dihydrophthalazine-1,4-dione, which was, after addition of reaction agents, refluxed and vacuum filtered to retrieve luminol. Using two stock solutions, we missed our precipitated luminol with sodium hydroxide, potassium ferricyanide, and hydrogen peroxide, in their respective solutions, in a dark room, to observe the blue light emission. INTRODUCTION Anyone who has watched a CSI show on the television […]
