ORGANIC CHEMISTRY,SOLNS...-ETEXT+BOX
ORGANIC CHEMISTRY,SOLNS...-ETEXT+BOX
4th Edition
ISBN: 9781119760702
Author: Klein
Publisher: WILEY
Question
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Chapter 18, Problem 41PP

(a)

Interpretation Introduction

Interpretation:

Predicted the product of the given following compound should be explained.

Concept Introduction:

Electrophile: It is positively charged species which seeks for negative charge and hence accepts pair of electrons from negatively charged species (Nucleophiles) which results in the formation of chemical bond.

Electrophilic aromatic substitution is anywhere benzene acts as a nucleophile to return a substituent with a new electrophile. The benzene needs to donate electrons from within the ring.

Benzene becomes fewer reactive in EAS when deactivating groups are present on it.

Deactivating groups are often fine electron-withdrawing groups

Electrophilic substitution reactions are chemical reactions in which an electrophile displaces a useful group in a compound, which is typically, extra than not always, and a hydrogen atom. The other main type of electrophilic substitution reaction is an electrophilic aromatic substitution reaction.

(b)

Interpretation Introduction

Interpretation:

 Predicted the product of the given following compound should be explained.

Concept Introduction:

Electrophile: It is positively charged species which seeks for negative charge and hence accepts pair of electrons from negatively charged species (Nucleophiles) which results in the formation of chemical bond.

Electrophilic aromatic substitution is anywhere benzene acts as a nucleophile to return a substituent with a new electrophile. The benzene needs to donate electrons from within the ring.

Benzene becomes fewer reactive in EAS when deactivating groups are present on it.

Deactivating groups are often fine electron-withdrawing groups

Electrophilic substitution reactions are chemical reactions in which an electrophile displaces a useful group in a compound, which is typically, extra than not always, and a hydrogen atom. The other main type of electrophilic substitution reaction is an electrophilic aromatic substitution reaction.

(c)

Interpretation Introduction

Interpretation:

 Predicted the product of the given following compound should be explained.

Concept Introduction:

Electrophile: It is positively charged species which seeks for negative charge and hence accepts pair of electrons from negatively charged species (Nucleophiles) which results in the formation of chemical bond.

Electrophilic aromatic substitution is anywhere benzene acts as a nucleophile to return a substituent with a new electrophile. The benzene needs to donate electrons from within the ring.

Benzene becomes fewer reactive in EAS when deactivating groups are present on it.

Deactivating groups are often fine electron-withdrawing groups

Electrophilic substitution reactions are chemical reactions in which an electrophile displaces a useful group in a compound, which is typically, extra than not always, and a hydrogen atom. The other main type of electrophilic substitution reaction is an electrophilic aromatic substitution reaction.

(d)

Interpretation Introduction

Interpretation:

 Predicted the product of the given following compound should be explained.

Concept Introduction:

Electrophile: It is positively charged species which seeks for negative charge and hence accepts pair of electrons from negatively charged species (Nucleophiles) which results in the formation of chemical bond.

Electrophilic aromatic substitution is anywhere benzene acts as a nucleophile to return a substituent with a new electrophile. The benzene needs to donate electrons from within the ring.

Benzene becomes fewer reactive in EAS when deactivating groups are present on it.

Deactivating groups are often fine electron-withdrawing groups

Electrophilic substitution reactions are chemical reactions in which an electrophile displaces a useful group in a compound, which is typically, extra than not always, and a hydrogen atom. The other main type of electrophilic substitution reaction is an electrophilic aromatic substitution reaction.

(e)

Interpretation Introduction

Interpretation:

 Predicted the product of the given following compound should be explained.

Concept Introduction:

Electrophile: It is positively charged species which seeks for negative charge and hence accepts pair of electrons from negatively charged species (Nucleophiles) which results in the formation of chemical bond.

Electrophilic aromatic substitution is anywhere benzene acts as a nucleophile to return a substituent with a new electrophile. The benzene needs to donate electrons from within the ring.

Benzene becomes fewer reactive in EAS when deactivating groups are present on it.

Deactivating groups are often fine electron-withdrawing groups

Electrophilic substitution reactions are chemical reactions in which an electrophile displaces a useful group in a compound, which is typically, extra than not always, and a hydrogen atom. The other main type of electrophilic substitution reaction is an electrophilic aromatic substitution reaction.

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1,4-Dimethyl-1,3-cyclohexadiene can undergo 1,2- or 1,4-addition with hydrogen halides. (a) 1,2-Addition i. Draw the carbocation intermediate(s) formed during the 1,2-addition of hydrobromic acid to 1,4-dimethyl-1,3-cyclohexadiene. ii. What is the major 1,2-addition product formed during the reaction in (i)? (b) 1,4-Addition i. Draw the carbocation intermediate(s) formed during the 1,4-addition of hydrobromic acid to 1,4-dimethyl-1,3-cyclohexadiene. ii. What is the major 1,4-addition product formed from the reaction in (i)? (c) What is the kinetic product from the reaction of one mole of hydrobromic acid with 1,4-dimethyl-1,3-cyclohexadiene? Explain your reasoning. (d) What is the thermodynamic product from the reaction of one mole of hydrobro-mic acid with 1,4-dimethyl-1,3-cyclohexadiene? Explain your reasoning. (e) What major product will result when 1,4-dimethyl-1,3-cyclohexadiene is treated with one mole of hydrobromic acid at - 78 deg * C ? Explain your reasoning.
Give the product of the bimolecular elimination from each of the isomeric halogenated compounds. Reaction A Reaction B. КОВ CH₂ HotBu +B+ ко HOIBU +Br+ Templates More QQQ Select Cv Templates More Cras QQQ One of these compounds undergoes elimination 50x faster than the other. Which one and why? Reaction A because the conformation needed for elimination places the phenyl groups and to each other Reaction A because the conformation needed for elimination places the phenyl groups gauche to each other. ◇ Reaction B because the conformation needed for elimination places the phenyl groups gach to each other. Reaction B because the conformation needed for elimination places the phenyl groups anti to each other.
Five isomeric alkenes. A through each undergo catalytic hydrogenation to give 2-methylpentane The IR spectra of these five alkenes have the key absorptions (in cm Compound Compound A –912. (§), 994 (5), 1643 (%), 3077 (1) Compound B 833 (3), 1667 (W), 3050 (weak shoulder on C-Habsorption) Compound C Compound D) –714 (5), 1665 (w), 3010 (m) 885 (3), 1650 (m), 3086 (m) 967 (5), no aharption 1600 to 1700, 3040 (m) Compound K Match each compound to the data presented. Compound A Compound B Compound C Compound D Compound
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