Concept explainers
a) Cyclopentanone
Interpretation:
How to prepare cyclopentanone from cyclopentanol is to be stated.
Concept introduction:
To state:
How to prepare cyclopentanone from cyclopentanol.
b) Cyclopentene
Interpretation:
How to prepare cyclopentene from cyclopentanol is to be stated.
Concept introduction:
Alcohols can be converted into
To state:
How to prepare cyclopentene from cyclopentanol.
c) 1-Methylcyclopentanol
Interpretation:
How to prepare1-methylcyclopentanol from cyclopentanol is to be stated.
Concept introduction:
A 20 alcohol is to be converted into a 30 alcohol. Oxidizing the alcohol to a ketone and treating the ketone with a Grignard reagent will lead to the formation of the 30 alcohol.
To state:
How to prepare 1-methylcyclopentanol from cyclopentanol is to be stated.
d) trans-2-Methylcyclopentanol
Interpretation:
How to prepare trans-2-Methylcyclopentanol from cyclopentanol is to be stated.
Concept introduction:
Alcohols when treated with acids undergo dehydration to yield an alkene. The alkenes can be hydrated either by oxymercuration-demercuration process following Markovnikov regiochemistry or by hydroboration-oxidation following anti-Markovnikov regiochemistry.
To state:
How to prepare trans-2-methylcyclopentanol from cyclopentanol.
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Chapter 17 Solutions
Organic Chemistry
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- The following questions concern ethyl (2-oxocyclohexane)carboxylate.(a) Write a chemical equation showing how you could prepare ethyl (2-oxocyclohexane)-carboxylate by a Dieckmann cyclization.(b) Write a chemical equation showing how you could prepare ethyl (2-oxocyclohexane)-carboxylate by acylation of a ketone.(c) Write structural formulas for the two most stable enol forms of ethyl (2-oxocyclohexane)carboxylate.(d) Write the three most stable resonance contributors to the most stable enolate derived from ethyl (2-oxocyclohexane)carboxylate.(e) Show how you could use ethyl (2-oxocyclohexane)carboxylate to prepare 2-methylcyclohexanone.(f) Give the structure of the product formed on treatment of ethyl (2-oxocyclohexane)-carboxylate with acrolein (H2C=CHCH=O) in ethanol in the presence of sodium ethoxidearrow_forwardDraw structures corresponding to the following IUPAC names:(a) 3-Methylbutanal (b) 3-Methylbut-3-enal(c) 4-Chloropentan-2-one (d) Phenylacetaldehyde(e) 2,2-Dimethylcyclohexanecarbaldehyde (f ) Cyclohexane-1,3-dione Predict the products of the reaction of the following substances with CrO3 inaqueous acid:arrow_forwardPredict the major products formed when benzoyl chloride (PhCOCl) reacts with the following reagents.(a) ethanol (b) sodium acetate (c) anilinearrow_forward
- (i) State reagents G and J. (ii) Draw the structural formula for compounds D, E and H.arrow_forward(a) Draw the structure of the hemiacetal formed from one mole of benzaldehyde and one mole of ethanol. (b) Draw the structure of the acetal formed from one mole of benzaldehyde and two moles of ethanol. (c) Draw the structure of 2-methoxy-2-butanol. What compounds could you prepare this from? (d) Draw the structure of 3-methoxyl-2-butanol. What functional groups are present? Is this an acetal, a hemiacetal, or neither? Explain. (e) Identify the functional groups in the molecules shown below. Circle any acetals or hemiacetal, and identify which they are. 0-arrow_forwardPropose a mechanism for the reaction of(a) 1-methylcyclohexanol with HBr to form 1-bromo-1-methylcyclohexane.(b) 2-cyclohexylethanol with HBr to form 1-bromo-2-cyclohexylethane.arrow_forward
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