The vinyl carbocations formed when phenyl-substituted acetylenes are protonated and the regioselectivity observed in the reaction have to be drawn and explained. Concept Introduction: Regioselectivity: It is the favouring of reactants or reagents to bond to one atom or another. Regioisomers are isomers in which connectivity of atoms varies but same numbers of atoms are present in it. An example of reaction between propene and hydrochloric acid for regioisomers is given as,

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Answer 1

Question

Chapter 9, Problem 79CP

(a)

Interpretation Introduction

Interpretation:

The vinyl carbocations formed when phenyl-substituted acetylenes are protonated and the regioselectivity observed in the reaction have to be drawn and explained.

Concept Introduction:

Regioselectivity: It is the favouring of reactants or reagents to bond to one atom or another. Regioisomers are isomers in which connectivity of atoms varies but same numbers of atoms are present in it. An example of reaction between propene and hydrochloric acid for regioisomers is given as,

(b)

Interpretation Introduction

Interpretation:

By relating the stabilities of transition states of vinyl carbonations, the stereo selectivity in reactions of 1a-d has to be explained.

Concept Introduction:

Stereoselectivity: A stereoselective reaction where only one stereoisomer reacts among mixture of stereoisomers reacts. This reaction gives two or more stereoisomers but produces almost only one stereoisomer product.

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Answer 2

Question

Chapter 9, Problem 79CP

(a)

Interpretation Introduction

Interpretation:

The vinyl carbocations formed when phenyl-substituted acetylenes are protonated and the regioselectivity observed in the reaction have to be drawn and explained.

Concept Introduction:

Regioselectivity: It is the favouring of reactants or reagents to bond to one atom or another. Regioisomers are isomers in which connectivity of atoms varies but same numbers of atoms are present in it. An example of reaction between propene and hydrochloric acid for regioisomers is given as,

(b)

Interpretation Introduction

Interpretation:

By relating the stabilities of transition states of vinyl carbonations, the stereo selectivity in reactions of 1a-d has to be explained.

Concept Introduction:

Stereoselectivity: A stereoselective reaction where only one stereoisomer reacts among mixture of stereoisomers reacts. This reaction gives two or more stereoisomers but produces almost only one stereoisomer product.

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Answer 3

Question

Chapter 9, Problem 79CP

(a)

Interpretation Introduction

Interpretation:

The vinyl carbocations formed when phenyl-substituted acetylenes are protonated and the regioselectivity observed in the reaction have to be drawn and explained.

Concept Introduction:

Regioselectivity: It is the favouring of reactants or reagents to bond to one atom or another. Regioisomers are isomers in which connectivity of atoms varies but same numbers of atoms are present in it. An example of reaction between propene and hydrochloric acid for regioisomers is given as,

(b)

Interpretation Introduction

Interpretation:

By relating the stabilities of transition states of vinyl carbonations, the stereo selectivity in reactions of 1a-d has to be explained.

Concept Introduction:

Stereoselectivity: A stereoselective reaction where only one stereoisomer reacts among mixture of stereoisomers reacts. This reaction gives two or more stereoisomers but produces almost only one stereoisomer product.

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Answer 4

Question

Chapter 9, Problem 79CP

(a)

Interpretation Introduction

Interpretation:

The vinyl carbocations formed when phenyl-substituted acetylenes are protonated and the regioselectivity observed in the reaction have to be drawn and explained.

Concept Introduction:

Regioselectivity: It is the favouring of reactants or reagents to bond to one atom or another. Regioisomers are isomers in which connectivity of atoms varies but same numbers of atoms are present in it. An example of reaction between propene and hydrochloric acid for regioisomers is given as,

(b)

Interpretation Introduction

Interpretation:

By relating the stabilities of transition states of vinyl carbonations, the stereo selectivity in reactions of 1a-d has to be explained.

Concept Introduction:

Stereoselectivity: A stereoselective reaction where only one stereoisomer reacts among mixture of stereoisomers reacts. This reaction gives two or more stereoisomers but produces almost only one stereoisomer product.

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Answer 5

Chapter 9, Problem 79CP

(a)

Interpretation Introduction

Interpretation:

The vinyl carbocations formed when phenyl-substituted acetylenes are protonated and the regioselectivity observed in the reaction have to be drawn and explained.

Concept Introduction:

Regioselectivity: It is the favouring of reactants or reagents to bond to one atom or another. Regioisomers are isomers in which connectivity of atoms varies but same numbers of atoms are present in it. An example of reaction between propene and hydrochloric acid for regioisomers is given as,

(b)

Interpretation Introduction

Interpretation:

By relating the stabilities of transition states of vinyl carbonations, the stereo selectivity in reactions of 1a-d has to be explained.

Concept Introduction:

Stereoselectivity: A stereoselective reaction where only one stereoisomer reacts among mixture of stereoisomers reacts. This reaction gives two or more stereoisomers but produces almost only one stereoisomer product.

Answer 6

Chapter 9, Problem 79CP

(a)

Interpretation Introduction

Interpretation:

The vinyl carbocations formed when phenyl-substituted acetylenes are protonated and the regioselectivity observed in the reaction have to be drawn and explained.

Concept Introduction:

Regioselectivity: It is the favouring of reactants or reagents to bond to one atom or another. Regioisomers are isomers in which connectivity of atoms varies but same numbers of atoms are present in it. An example of reaction between propene and hydrochloric acid for regioisomers is given as,

Answer 7

Chapter 9, Problem 79CP

(a)

Interpretation Introduction

Interpretation:

The vinyl carbocations formed when phenyl-substituted acetylenes are protonated and the regioselectivity observed in the reaction have to be drawn and explained.

Concept Introduction:

Regioselectivity: It is the favouring of reactants or reagents to bond to one atom or another. Regioisomers are isomers in which connectivity of atoms varies but same numbers of atoms are present in it. An example of reaction between propene and hydrochloric acid for regioisomers is given as,

Answer 8

(b)

Interpretation Introduction

Interpretation:

By relating the stabilities of transition states of vinyl carbonations, the stereo selectivity in reactions of 1a-d has to be explained.

Concept Introduction:

Stereoselectivity: A stereoselective reaction where only one stereoisomer reacts among mixture of stereoisomers reacts. This reaction gives two or more stereoisomers but produces almost only one stereoisomer product.

Answer 9

(b)

Interpretation Introduction

Interpretation:

By relating the stabilities of transition states of vinyl carbonations, the stereo selectivity in reactions of 1a-d has to be explained.

Concept Introduction:

Stereoselectivity: A stereoselective reaction where only one stereoisomer reacts among mixture of stereoisomers reacts. This reaction gives two or more stereoisomers but produces almost only one stereoisomer product.

Answer 10

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Answer 11

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Answer 13

Ch. 9.2 - Prob. 1LTS Ch. 9.2 - Prob. 1PTS Ch. 9.2 - Prob. 2PTS Ch. 9.2 - Prob. 3PTS Ch. 9.2 - (+)-Citronella is the main compound responsible...Ch. 9.3 - Prob. 2LTS Ch. 9.3 - Prob. 5PTS Ch. 9.3 - Prob. 6ATS Ch. 9.4 - Prob. 7CC Ch. 9.4 - Prob. 8CC

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Chapter 9 Solutions