Dehydration of Methylcyclohexanols Balie Zander Date Conducted: March 27‚ 2013 Date Submitted: April 3‚ 2013 Introduction: The purpose of this experiment was to demonstrate the application of Zaitzev’s rule‚ the Evelyn Effect and the occurrence of an E1 mechanism in an alcohol dehydration reaction. Specifically this experiment involved the dehydration of 2-methylcylcohexanol by heating this alcohol in the presence of phosphoric acid and then to based on the results of the gas chromatography
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Dehydration of 2-Methylcyclohexanol February 10‚ 2013 Introduction This experiment was done to demonstrate the practical use of dehydration reactions and produce three different products. Dehydration reactions are reactions that involve the leaving of an “-OH” or “-H” group resulting in the formation of a double bond between two carbons. For the experiment we used 2-Methylcyclohexanol as a beginning reagent to dehydrate and possibly form 3-methylcyclohexene‚ 1-methylcyclohexene‚ or methylenecyclohexane
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The monomers combine with each other using covalent bonds to form larger molecules known as polymers. In doing so‚ monomers release water molecules as byproducts. This type of reaction is known as dehydration synthesis. In a dehydration synthesis reaction‚ the hydrogen of one monomer combines with the hydroxyl group of another monomer‚ releasing a molecule of water. At the same time‚ the monomers share electrons and form covalent bonds. As additional monomers join
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From the table‚ the result of dehydration of secondary alcohol is expected‚ and it undergoes E1 elimination. As supposed in the theory and mechanism‚ because elimination can occur both sides of secondary carbocation‚ so there are three products: 1-butene‚ trans-2-butene and cis-2-butene with three peaks. The main product is trans-2-butene‚ because it is the most stable compound. However‚ the result of dehydration of primary alcohol is not expected. It is supposed to form only one product‚ 1-butene
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Formation of an Alkene by Alcohol Dehydration Lab Report Balanced Chemical Equation for the Main Reaction Mechanism The acid-catalyzed dehydration of secondary and tertiary alcohols involves non-isolable carbocation intermediaries. In the first step of the of the reaction mechanism below‚ a phosphoric acid catalyst adds a proton to the oxygen atom of the alcohol to form an oxonium ion. The OH is converted to a better leaving group as the positive charge on the oxygen weakens the carbon-oxygen
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Dehydration of Methylcyclohexanols 1. Introduction The purpose of this experiment was to carry out the dehydration of 2-methylcyclohexanol or 4-methylcyclohexanol by heating the alcohol in the presence of phosphoric acid. The alcohol was a mixture of cis and trans isomers‚ so it might have exhibited an Evelyn effect. It was also looked at if the products showed the Zaitsev’s rule‚ where in an elimination reaction‚ the most stable alkene was favored‚ which was usually the most substituted one and
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determination and competitive mindsets are what they thrive on. However‚ human’s bodies are not supernatural and if runners do not properly treat their bodies‚ then a good race time is the least of their worries. Dehydration seems to be a common issue found among runners. “Dehydration is what causes runners to experience headaches‚ cramps‚ and dizziness during their workouts” (Chock‚ 2014). According to the website‚ runnersworld.com‚“the lack of fluids can make or great your workout.” That most
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alkene is the dominant product‚ the reaction follows Zaitsev’s rule. Zaitsev’s rule states that the major product of a β-elimination reaction is the most stable alkene [1].Acid-Catalyzed Dehydration is the elimination of a molecule of water from adjacent carbon atoms. An alcohol can be converted to an alkene by dehydration‚ which is often brought on by heating the alcohol with either 85% phosphoric acid or concentrated sulfuric acid [1]. The objective of this experiment is to dehydrate 3-methyl-3-pentanol
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Dehydration refers to a chemical reaction where the reactant loses a water molecule. In the presence of a strong acid like 85% phosphoric acid‚ an alcohol like-2-methylcyclohexanol can be dehydrated to form an alkene. In this experiment‚ alcohol was dehydrated by E1 elimination‚ in order to synthesize cyclohexene. First‚ alcohol is protonated by the acid. Second‚ during E1 elimination‚ a carbocation is formed by the removal of an oxonium ion to yield a secondary and a tertiary carbocation. The receiving
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______________________________________ Date: ________________________ Student Exploration: Dehydration Synthesis Vocabulary: carbohydrate‚ chemical formula‚ dehydration synthesis‚ disaccharide‚ glucose‚ hydrolysis‚ monosaccharide‚ polysaccharide‚ valence Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1. If you exercise on a hot day‚ you need to worry about dehydration. In this context‚ what do you think dehydration means? When you are exercising in the heat you will sweat a lot. The sweat
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