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(Dehydration of Alcohols)1-what would be the result of using 3-heptanol rather than cyclohexanol as a starting...
In the dehydration reaction of cyclohexanol to cyclohexene, What problems would be encountered if 3-heptanol is...
In the dehydration reaction of cyclohexanol to cyclohexene,
What problems would be encountered if 3-heptanol is used as a
starting material, (instead of cyclohexanol) and how can they be
circumvented?
OH O 04 + upon 4. O + ho + H3PO4 - + H2O cyclohexanol cyclohexene Figure 10. The dehydration of cyclohexanol to form cyclohexene.
1) Predict the following major alkene product that would result from dehydration of the following alcohols...
1)
Predict the following major alkene product that would result from
dehydration of the following alcohols ,with no carbocation
rearrangements:
2) Draw the mechanism for the following dehydration
reaction:
** I already asked these questions, the tutor used conc.
H2SO4... Could I use H3PO4 instead? For #2, I'm not sure if I drew
the mechanism correctly can you explain and draw the mechanism
please? The pic in pencil is my attempt at #2
Convert Cyclohexanol to Cyclohexene via a Acid-Catalyzed Dehydration reaction 1. Why does the product ‘come over’...
Convert Cyclohexanol to Cyclohexene via a Acid-Catalyzed Dehydration reaction 1. Why does the product ‘come over’ after being formed? Please think about the properties of the starting material and product. 2. If there was no acid present, would you expect to get a product? Why/why not? 3. If we start off with 10 molecules of the starting alcohol and only get an 80% yield, how many molecules will we find in the product flask? 4. Look up the concept of...
1) Draw a complete scheme and mechanism for the dehydration of cyclohexanol to cyclohexene. Propose a...
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...
4) Give all possible alkenes formed during the dehydration of each of the following alcohols: a....
4) Give all possible alkenes formed during the dehydration of each of the following alcohols: a. 1-methylcyclohexanol b. 2-methylcyclohexanol C. Cyclopentylmethanol d. 3,3-dimethyl-1-butanol 5) What alcohol would be the most appropriate starting material for the synthesis of 1- methylcyclohexene? Draw the reaction scheme.
First Name: Lab Section: Last Name: Class Roll # Pre-lab questions for Experiment #9: Dehydration of...
First Name: Lab Section: Last Name: Class Roll # Pre-lab questions for Experiment #9: Dehydration of cyclohexanol 1. Give the overall reaction for the dehydration of cyclohexanol. 2. Cyclohexanol is the limiting reactant in the above reaction. Starting with 3.5 mL of cyclohexanol, what is the theoretical yield (in grams) of cyclohexene? 3. If 2-methylcyclohexanol is subjected to El dehydration, two major products are formed. What are the two products (draw their structures - be careful that you don't draw...
Dehydration of Alcohols Dehydration of 2-Methylcyclohexanol Prelaboratory Mole Calculations Calculate the theoretical yield of the cyclohexenes...
Dehydration of Alcohols Dehydration of 2-Methylcyclohexanol Prelaboratory Mole Calculations Calculate the theoretical yield of the cyclohexenes products in both moles and grams. One mole of the starting alcohol gives one mole the mixture of isomers. You are using 1.0 mL of 2-methylcyclohexanol and 0.5 mL of the catalyst, H3PO4. No calculation is needed for the catalyst. CHE CH3 CH3 OH Н,РО, Third product CH2 + one double bond H2O heat 2-methylcyclohexanol bp 165-168°C d=0.93 g/mL 1-methylcyclohexene bp 110°C 3-methylcyclohexene bp...
Question 4 o Dehydration of alcohols to its corresponding alkene(s) can be achieved in the presence...
Question 4 o Dehydration of alcohols to its corresponding alkene(s) can be achieved in the presence of a strong acid and heat, consider the following reaction scheme: H,PO OH A Starting Material Hoffman product (minor) Zaitsev product (major) Analo tha Inart Analyze the IR spectra for compounds 1-3, and correlate it to the starting material and product(s) shown in the reaction scheme. Figure 1: IR spectrum of compound 1 Figure 2: IR spectrum of compound 2. mrem Figure 3. IR...
please help The dehydration of alcohols Under acidic conditions, alcohols will undergo a dehydration reaction, producing...
please help
The dehydration of alcohols Under acidic conditions, alcohols will undergo a dehydration reaction, producing an alkene and water. During the reaction, the hydroxyl group of the alcohol and a hydrogen atom from an adjacent carbon atom are lost. The reaction takes place in three steps, as shown in the diagram. (Figure 1) In the first step, a hydrogen lon bonds to the hydroxyl group of the alcohol. In the second step, the protonated hydroxl group leaves the compound,...
2. Why is it safer to use NaOCI as the oxidant, rather than Cro. / pyridine?...
2. Why is it safer to use NaOCI as the oxidant, rather than Cro. / pyridine? 3. Sodium hypochlorite is prepared by reacting Cl, through aqueous (excess) NaOH. Write a balanced equation for this; HINT: push electrons. 4. Looking a the reaction scheme in the background section of this lab, what mechanism(s) are involved in this reaction. Name them and indicate which reaction steps follow these mechanistic patterns. 130 3. Theoretical question: Suppose you had a 20/80 mixture of part...
In the dehydration reaction of cyclohexanol to cyclohexene,
What problems would be encountered if 3-heptanol is used as a
starting material, (instead of cyclohexanol) and how can they be
circumvented?
OH O 04 + upon 4. O + ho + H3PO4 - + H2O cyclohexanol cyclohexene Figure 10. The dehydration of cyclohexanol to form cyclohexene.
1)
Predict the following major alkene product that would result from
dehydration of the following alcohols ,with no carbocation
rearrangements:
2) Draw the mechanism for the following dehydration
reaction:
** I already asked these questions, the tutor used conc.
H2SO4... Could I use H3PO4 instead? For #2, I'm not sure if I drew
the mechanism correctly can you explain and draw the mechanism
please? The pic in pencil is my attempt at #2
4) Give all possible alkenes formed during the dehydration of each of the following alcohols: a. 1-methylcyclohexanol b. 2-methylcyclohexanol C. Cyclopentylmethanol d. 3,3-dimethyl-1-butanol 5) What alcohol would be the most appropriate starting material for the synthesis of 1- methylcyclohexene? Draw the reaction scheme.
First Name: Lab Section: Last Name: Class Roll # Pre-lab questions for Experiment #9: Dehydration of cyclohexanol 1. Give the overall reaction for the dehydration of cyclohexanol. 2. Cyclohexanol is the limiting reactant in the above reaction. Starting with 3.5 mL of cyclohexanol, what is the theoretical yield (in grams) of cyclohexene? 3. If 2-methylcyclohexanol is subjected to El dehydration, two major products are formed. What are the two products (draw their structures - be careful that you don't draw...
Dehydration of Alcohols Dehydration of 2-Methylcyclohexanol Prelaboratory Mole Calculations Calculate the theoretical yield of the cyclohexenes products in both moles and grams. One mole of the starting alcohol gives one mole the mixture of isomers. You are using 1.0 mL of 2-methylcyclohexanol and 0.5 mL of the catalyst, H3PO4. No calculation is needed for the catalyst. CHE CH3 CH3 OH Н,РО, Third product CH2 + one double bond H2O heat 2-methylcyclohexanol bp 165-168°C d=0.93 g/mL 1-methylcyclohexene bp 110°C 3-methylcyclohexene bp...
Question 4 o Dehydration of alcohols to its corresponding alkene(s) can be achieved in the presence of a strong acid and heat, consider the following reaction scheme: H,PO OH A Starting Material Hoffman product (minor) Zaitsev product (major) Analo tha Inart Analyze the IR spectra for compounds 1-3, and correlate it to the starting material and product(s) shown in the reaction scheme. Figure 1: IR spectrum of compound 1 Figure 2: IR spectrum of compound 2. mrem Figure 3. IR...
please help
The dehydration of alcohols Under acidic conditions, alcohols will undergo a dehydration reaction, producing an alkene and water. During the reaction, the hydroxyl group of the alcohol and a hydrogen atom from an adjacent carbon atom are lost. The reaction takes place in three steps, as shown in the diagram. (Figure 1) In the first step, a hydrogen lon bonds to the hydroxyl group of the alcohol. In the second step, the protonated hydroxl group leaves the compound,...
2. Why is it safer to use NaOCI as the oxidant, rather than Cro. / pyridine? 3. Sodium hypochlorite is prepared by reacting Cl, through aqueous (excess) NaOH. Write a balanced equation for this; HINT: push electrons. 4. Looking a the reaction scheme in the background section of this lab, what mechanism(s) are involved in this reaction. Name them and indicate which reaction steps follow these mechanistic patterns. 130 3. Theoretical question: Suppose you had a 20/80 mixture of part...
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