Concept explainers
(a)
Interpretation:
Enol tautomer of the given compound has to be drawn.
Concept Introduction:
Keto-Enol tautomerization: The enol and keto are said to be tautomer, are constitutional isomers that rapidly interconvert via the migration of a proton. The interconversion between an enol and a
The tautomerization is catalyzed by even trace amounts of acid (or base).
Tautomerism is the ability of a molecule to exist in more than one chemical form. Tautomers are formed by the migration of a hydrogen atom, accompanied by the switching of a single and neighboring double bond.
The only difference in keto-enol tautomer is the location of hydrogen and double bond.
(b)
Interpretation:
Enol tautomer of the given compound has to be drawn.
Concept Introduction:
Keto-Enol tautomerization: The enol and keto are said to be tautomer, are constitutional isomers that rapidly interconvert via the migration of a proton. The interconversion between an enol and a ketone is called keto-enol tautomerization. Tautomerization is an equilibrium process, that the equilibrium will establish specific concentrations for both the enol and the ketone. Once the equilibrium is reached, the concentrations of ketone and enol can be measured.
The tautomerization is catalyzed by even trace amounts of acid (or base).
Tautomerism is the ability of a molecule to exist in more than one chemical form. Tautomers are formed by the migration of a hydrogen atom, accompanied by the switching of a single and neighboring double bond.
The only difference in keto-enol tautomer is the location of hydrogen and double bond.
(c)
Interpretation:
Enol tautomer of the given compound has to be drawn.
Concept Introduction:
Keto-Enol tautomerization: The enol and keto are said to be tautomer, are constitutional isomers that rapidly interconvert via the migration of a proton. The interconversion between an enol and a ketone is called keto-enol tautomerization. Tautomerization is an equilibrium process, that the equilibrium will establish specific concentrations for both the enol and the ketone. Once the equilibrium is reached, the concentrations of ketone and enol can be measured.
The tautomerization is catalyzed by even trace amounts of acid (or base).
Tautomerism is the ability of a molecule to exist in more than one chemical form. Tautomers are formed by the migration of a hydrogen atom, accompanied by the switching of a single and neighboring double bond.
The only difference in keto-enol tautomer is the location of hydrogen and double bond.
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Essential Organic Chemistry, Global Edition
- Identify the reagents represented by the letters a-e in the following scheme:arrow_forwardDraw the ALL of the E2 organic product formed when the structure shown below undergoes dehydrohalogenation in alcoholic KOH with heat. Which of the products is formed the most?arrow_forwardRank the compounds in each group in order of increasing reactivity in nucleophilic acyl substitution. C6H5CO2CH3, C6H5COCl, C6H5CONH2arrow_forward
- draw the structure of the expected product when the compound provided undergoes Claisen rearrangement.Include isomerization to a phenol IF appropriate.arrow_forwardArrange the following CARBONYL compounds (INCREASING REACTIVITY towards NUCLEOPHILIC ADDITION)arrow_forwardChoose from the pool of reagents which will completely differentiate the two compounds in the pairarrow_forward
- Rank the following compounds in order of increasing reactivity in nucleophilic acyl substitution.arrow_forwardDraw the enol tautomers for each of the following compounds. For compounds that have more than one enol tautomer, indicate the one that is more stable.arrow_forwardIdentify the missing reagents a-f in the following scheme:arrow_forward