Nevertheless, the latter is not used in this experiment since it is very reactive and extremely flammable. On the contrary, NaBH4 is relatively mild and it can be used with protic solvents. In this manner, 1.507 grs of the ketone 9-fluorenone were mixed with 30.0 ml of 95% ethanol in a 125 ml Erlenmeyer flask. The bright yellow mixture was stirred during 7 minutes until all the components were dissolved.
The purpose of this experiment is to perform a two step reductive amination using o-vanillin with p-toluidine to synthesize an imine derivative. In this experiment, 0.386 g of o-vanillin and 0.276 g of p-toluidine were mixed into an Erlenmeyer flask. The o-vanillin turned from a green powder to orange layer as it mixed with p-toludine, which was originally a white solid. Ethanol was added as a solvent for this reaction. Sodium borohydride was added in slow portion as the reducing agent, dissolving the precipitate into a yellowish lime solution.
The goal of the experiment is to synthesize a bromohexane compound from 1-hexene and HBr(aq) under reflux conditions and use the silver nitrate and sodium iodide tests to determine if the product is a primary or secondary hydrocarbon. The heterogeneous reaction mixture contains 1-hexene, 48% HBr(aq), and tetrabutylammonium bromide and was heated to under reflux conditions. Heating under reflux means that the reaction mixture is heated at its boiling point so that the reaction can proceed at a faster rate. The attached reflux condenser allows volatile substances to return to the reaction flask so that no material is lost. Since alkenes are immiscible with concentrated HBr, tetrabutylammonium bromide is used as a phase-transfer catalyst.
Sample one had a positive reaction with Biuret’s reagent and Lugol’s reagent; however, no precipitate formed with Benedict’s reagent. Sample three did not have a positive reaction with Biuret’s reagent because it had a gray color change. There was a positive reaction between sample three and Lugol’s reagent and Benedict’s reagent. Sample nine had a positive reaction with all three reagents. 7.
In the talk, “Adventures in Organic Chemistry – Over Three Decades of Synthetic Organic Chemistry” presented by Dr. Chris Condeiu, he tried to relate the industry of organic chemistry to a students’ perspective. Three major points were drawn out through the talk. The first was the perspective of how capitalism drives the industry and the mechanism of doxycycline was formed. With an overview of his talk, the expectation was that a deeper understanding of how pharmaceutical drugs’ mechanisms are formed; instead, an insight of how the pharmaceutical industry can make one prosperous or just benefit the industry as a whole. Starting with the point about how capitalism governs the pharmaceutical industry, this relates to society in general.
This was proved by utilizing the IR spectrum to verify the C =O was not in the final product as it lacked the 1640 cm-1 peak. The melting point of 113-115 degrees C proved that the final product obtained was the E-Stilbene. The TLC plate proved that the E and the Z product was produced, show cased by the double intensity of the DCM spot to the final product’s spot, both which had an Rf of 0.92. The double intensity proved that both products were produced, but through heating and filtering, the Z-Stilbene was
Concepts learned include molar ratio calculation, and ester constituents (carboxylate acid and alcohol). In addition, the use of a cold finger condenser and its purpose in ester reactions was discovered. The effects of drierite on reactions and its ability to absorb water was also studied. Concepts of stoichiometry were reviewed from previous classes, and integrated into this lab experiment as well.
As relayed in Table 1, the results concluded that the only molecules to react and form a precipitate were 1-chlorobutane and 1-bromobutane. 1-bromobutane formed a precipitate first, after two minutes and eight seconds. 1-cholorobutane did not for a precipitate until after heat was applied after seven minutes and fifty-one seconds. 2-cholorbutane, 2-bromobutane, and tert-butyl-chloride did not react at all during the course of the experiment. 1-bromobutane was expected to react first, followed by 1-chlorbutane.
She looked at different diamine ligands and trying to make them with butane diones and different anilines. She reacted her ligands with iron (II) chloride and found that her ligands immediately turned brown when exposed to the air because they were air sensitive.
Experimental Methods: 1. SYNTHESIS OF 4-BENZOYL BUTYRIC ACID METHYL ESTER Materials required * 5 oxopentanoic acid : 2 gm (Aldrich) * Methanol : 50 ml * Acetic Acid (Rankem) Procedure: * 2 grams of 5 oxopentanoic acid was weighed and placed in a round bottom flask and then to it 50 ml of methanol was added. It was placed on a hot plate and the temperature was increased to 50 degrees under ambient air conditions.
Lab Report 10: Nitration of Bromobenzene Raekwon Filmore CM 244 Section 40 March 27, 2018 Introduction: For this experiment, nitration of bromobenzene was the focus of the lab. The benzene is an aromatic compound and when it reacts with wither a mixture of sulfuric acid or nitric acid creates what is known as a nitro group.
Introduction Vitamins are the organic molecules that function in a wide variety of roles within the body. The most significant function of vitamins is to serve as cofactors (co-enzymes) for enzymatic reactions. The distinguishing feature of vitamins is that they cannot be synthesized within the mammalian cells, and hence it should be taken through food supplements. The family of Vitamin B, called Vitamin B complex, plays important role in converting food into energy and helping the body metabolize fats and proteins. Vitamin B6 is a collective name for inter-convertible chemically similar compounds – Pyridoxine
The two reactants present in the esterification process are the functional groups; carboxylic acid and alcohol. This reaction can be catalysed by the presence of H+ ions, often sulphuric acid is used. This type of esterification, where carboxylic acid and alcohol with an acid catalyst are used is known as the Fischer esterification. This is the type of esterification process which will be undertaken within this experiment, where 4mL of concentrated sulphuric acid will be used to speed up the reaction. It is also important to note that the esterification reaction can also include reactions of; an acyl halide
Results With Respect to Potassium Bromate(V) The table below shows my results when varying the concentration of potassium bromate(V):    Concentration of Potassium Bromate(V) (mol/dm-3) Time Take For the Mixture to Turn Colourless (seconds)
Many other chlorinated and brominated aromatic compounds such as tryptophan, tyrosine and many other derivatives of pyrrole are also present in nature. Reactions of haloarenes or reactions of aryl halides can be primarily divided into three types: Nucleophilic Substitution Reactions Electrophilic Substitution Reactions Reaction with Metals The reaction of Haloarenes – Nucleophilic Substitution Reactions
