Synthesis Of Hexane Lab Report

The design of this experiment aimed to synthesize 2-methylphenoxyacetic acid from 2-methylphenol and sodium chloroacetate by means on phenol alkylation. 2-Methylphenoxyacetic acid has been used to control the growth in plants and exemplifies a product of synthesis as it is a complex molecule constructed from two simple molecules. This synthesis proceeds by a nucleophilic substitution reaction, more specifically, via SN2 mechanism (see below). An SN2 mechanism's reactants are a nucleophile and a good leaving group (usually a halide ion). Once the crude product is obtained, it is purified by recrystallization with water and collected.

This lab could have contained errors. The errors could have happened when performing the lab. Some of the possible errors in this lab are:

ssion In this experiment, 2-ethyl-1,3-hexanediol was reacted with sodium hypochlorite in an attempt to identify how sodium hypochlorite acts as a reagent. Due to the nature of 2-ethyl-1,3-hexanediol we are able to determine if sodium hypochlorite is a selective reagent. 2-ethyl-1,3-hexanediol has 2 alcohol functional groups with one being primary and the other being secondary. A selective reagent is one which oxidizes one functional group although its in the presence of 2 or more.

Using the ethanol as the solvent produces a more environmentally favorable conditions, and the bleach combined with sodium iodide produces an efficient and selective (mono-) product. Once the final product had been recrystallized with isopropanol, the crystal were collected via vacuum filtration. These crystals took some time to dry out, but they eventually were dry enough to scrape out for further evaluation. After an IR was run, it was quite obvious the product was surely Iodovanillin. Further analysis of the melting point was taken to ensure the final product was the desired Iodovanillin.

6. Purpose: to clarify the mechanism for the cycloaddition reaction between benzonitrile oxide and an alkene, and to test the regiochemistry of the reaction between benzonitrile oxide and styrene; to purify the crude product of either trans-stilbene, cis-stilbene, or styrene reaction.

The product was placed in a Craig tube and several drops of hot (100°C) solvent (50% water, 50% methanol, by volume) was added and heated until all of the crystals dissolved. The Craig tube was plugged and set in an Erlenmeyer flask to cool. Crystallization was induced once the mixture was at room temperature by scratching the inner wall of the tube. It was then placed into an ice bath for ten minutes until crystallization was complete. The tube was then

The Purpose of this experiment is for the students to learn how to use sodium borohydride to reduce benzil to its secondary alcohol product via reduction reaction. This two-step reaction reduces aldehydes by hydrides to primary alcohols, and ketones to secondary alcohols. In order for the reaction to occur and to better control the stereochemistry and yield of the product, the metal hydride nucleophile of the reducing agents such as LiH, LiAlH4, or NaBH4 must be carefully chosen. Being that LiAlH4 and NaBH4 will not react with isolated carbon-carbon double bonds nor the double bonds from aromatic rings; the chosen compound can be reduce selectively when the nucleophile only react with

After putting the CH2Cl2 to a beaker containing the drying agent anhydrous sodium sulfate, a sticky white solid was recovered.

The reaction is carried out in saturated aqueous ammonium chloride solution. Thus no special drying of solvents, reagents, or glassware is required. The reaction mechanism for this experiment can be seen below (Fig. 2)

Synthesis Of An Alkyne: Bromination Of E-Stilbene and Dehydrohalogenation Of The Dibromide Nathanael Brown Fall 2015 Lab Section 353-02 Lab Partner: Peyton Warner   Abstract: The synthesis of diphenylacetylene is a two-step synthesis process starting with trans stilbene. Trans stilbene is dissolved and then reacted with pyridinium hydrobromide perbromide to form meso stilbene dirbomide in the halogenation step, which is then reacted with potassium hydroxide and triethylene glycol to promote dehyrdohalogenation to synthesize diphenylacetylene.

In order to complete a certain experiment 20g of cyclohexanol was needed to proceed. However, the stock of cyclohexanol in the storeroom was depleted and the compound was on backorder. In order to proceed with the research as quickly as possible, it was decided that the needed cyclohexanol was to be synthesized in the lab.

During the experiment, when the addition of the sodium borohydride, the reducing agent, was added, the solution became a foggy white shade. When the 1.0mL of 0.05 HCl were

Synthesizing such macromolecules with precisely defined motif sequence and large amount of functional groups through traditional synthetic route would definitely undergo a series of complex reactions, which would face huge challenge in purification and dispersity. A solution has been raised regarding such challenges: by introducing size, shape and functional groups persisting building blocks, people will design and synthesis macromolecules by selecting favorable building blocks and bond them together through precision chemistry.28-30 The aforementioned building blocks, which are characterized with persistence in shape and symmetry, would be the key to the control over interaction positions as well as anisotropic properties of the macromolecules,

In this experiment, NaOH was the inhibitor used to stop the enzymatic reactions. NaOH is very basic and when added to a solution, will cause a drastic increase in pH, causing denaturation of the enzyme. The amount of product formed could be calculated by placing the test tube in a spectrometer after the addition on NaOH. A spectrometer measures the absorbance of a solution, which helps compare how much of a substance is in a solution.

In the modern world, it is near impossible to live in an environment where one is not exposed and reliant upon the use of polymers. From credit cards to nappies; plastic bottles to prescription glasses, the applications of polymers encompass an endless range of everyday necessities. However, the significance of synthetic polymers was not universally recognised until its initial introduction as polyethylene during World War II. During the combat, they served as a critical material for insulated radar electronics (ACC, 2005).