A) Draw /Write down the mechanism of dehydration of cyclohexanol to cyclohexane using sulfuric acid and phosphoric acid.identify the leaving groups and the steps of OH depronated.
B) Note the presence of water
C/ Can we note the presence of water in a IR spectrum?
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A) Draw /Write down the mechanism of dehydration of cyclohexanol to cyclohexane using sulfuric acid and...
Write equations for the mechanistic steps in the dehydration of cyclohexanol assuming an E1 mechanism. What is the role of phosphoric acid? Why is heat required?
Draw a proposed mechanism for the reaction of cyclohexanol with aqueous sulfuric acid to yield cyclohexene. Label each step as either: nucleophilic attack, loss of a leaving group, or proton transfer. What type of elimination reaction is this: E1 or E2? Explain. Explain how the leveling effect has occurred in this reaction? What is the likely base in the last step: water or HSO4-? Explain.
Draw the mechanism of the dehydration of 2-methylcyclohexanol in the presence of phosphoric acid. Which product is favored and why?
1) Draw a complete scheme and mechanism for the dehydration of cyclohexanol to cyclohexene. Propose a scheme and conditions for the preparation of cyclohexanol from cyclohexene. How would you track the progress of your reactions and confirm product identification? 2) Create a chart comparing E1, E2, SN1 and SN2 reactions. Be detailed and cover: structure of RX, reactivity of nucleophile, concentration of nucleophile, solvent and stereochemistry. 3) Mixing cyclohexanol with phosphoric acid is an exothermic process, whereas the production of...
1. Write down the reaction mechanism for the dehydration of cis-2-methylcyclohexanol via E2 pathway. 2. Write the reacton equations between 1-methylcyclohexane and 3-methylcyclohexane with KMNO4. 3. What is the name of the reaction? 4. What is the function of the phosphoric acid? Name another acid you can use in the dehydration.
Questions 1. Write down the reaction mechanism for the dehydration cis-2- methylcyclohexanol via Ez pathway. 2. Write the reaction equations between 1-methylcyclohexene and 3- methylcyclohexene with KMnO4. 3. What is name of the reaction? 4. What is the function of phosphoric acid? Name another acid you can use in the dehydration
2. (5 pts) Draw out the mechanism for the acid-catalyzed dehydration shown below. Include all steps, clearly show all charges, and all unshared electron pairs. Use curved arrows to show electron movement in all making and breaking of bonds. NOTE: To show the breaking of a bond you must draw the bond explicitly so that you can clearly draw an arrow from the electrons in the bond. : OH Q" - W H;0* -H;0
4. (22 points) "Fun in acid" question: Draw a reasonable mechanism using the curved-arrow formalism (include lone pair electrons) for the following rearrangement reaction of an arene oxide in the presence of dilute aqueous sulfuric acid to give the corresponding phenol. What is the thermodynamic driving force for the conversion of the arene oxide into the phenol? Hint: 4-steps H2SO4 HO in excess: used as solvent) "Fun in acid" question: Draw a reasonable mechanism using the curved-arrow formalism (include lone...
Write a detailed mechanism for the sulfuric acid-catalyzed dehydration of 4-methyl-2-pentanol that accounts for the formation of all 5 of the below alkenes. (Hint: More than one carbocation rearrangement may be necessary to account for the formation of all of the products.) 4-methyl-1-pentene Z and E-4-methyl-2-pentene 2-methyl-1-pentene 2-methyl-2-pentene Unassigned
Complete the electron-pushing mechanism for the E1 reaction when
2-methylbutan-2-ol is treated with 20% sulfuric acid.
Hint: The E1 mechanism involves dissociation of the hydroxyl
group from the substrate. The acid is used to convert the hydroxyl
group to a good leaving group. Do not delete any pre-drawn
bonds/charges/lone pairs.
Complete the electron-pushing mechanism for the E1 reaction when 2-methylbutan-2-ol is treated with 20% sulfuric acid Map a) Use two curved arrows to show the fast b) Use a curved...