The conformation of rings A, B, C and D in Cholestanol has to be described. Concept Introduction: The conformation structures of six membered rings are given by chair forms. In the chair conformation, all C-C-C bond angles are 110 .9 0 and the hydrogens on the adjacent carbon atoms are staggered with respect to one another. In the chair conformation, no two atoms are closely present, so, there is a little strain present in chair conformation structure of cyclohexane. The C-H bonds in the chair conformation are arranged in axial and equatorial positions. The bonds that are present parallel to the axis are axial bonds and the bonds that are present perpendicular to the axis are equatorial bonds. In cyclohexane, six hydrogens are axial and six hydrogens are equatorial.

Question

Draw structures corresponding to the following names and give IUPAC names for the following compounds: (8 Point) a) b) c) CH3 CH2CH3 CH3CHCH2CH2CH CH3 C=C H3C H H2C=C=CHCH3 d) CI e) (3E,5Z)-2,6-Dimethyl-1,3,5,7-octatetraene f) (Z)-4-bromo-3-methyl-3-penten-1-yne g) cis-1-Bromo-2-ethylcyclopentane h) (5R)-4,4,5-trichloro-3,3-dimethyldecane

Answer 1

Question

Chapter 2, Problem 2.64P

(a)

Interpretation Introduction

Interpretation:

The conformation of rings A, B, C and D in Cholestanol has to be described.

Concept Introduction:

The conformation structures of six membered rings are given by chair forms. In the chair conformation, all C-C-C bond angles are 110.90 and the hydrogens on the adjacent carbon atoms are staggered with respect to one another. In the chair conformation, no two atoms are closely present, so, there is a little strain present in chair conformation structure of cyclohexane. The C-H bonds in the chair conformation are arranged in axial and equatorial positions. The bonds that are present parallel to the axis are axial bonds and the bonds that are present perpendicular to the axis are equatorial bonds. In cyclohexane, six hydrogens are axial and six hydrogens are equatorial.

(b)

Interpretation Introduction

Interpretation:

The hydroxyl group present on Ring A is either axial or equatorial has to be given.

Concept Introduction:

The C-H bonds in the chair conformation are arranged in axial and equatorial positions. The bonds that are present parallel to the axis are axial bonds and the bonds that are present perpendicular to the axis are equatorial bonds. In cyclohexane, six hydrogens are axial and six hydrogens are equatorial.

(c)

Interpretation Introduction

Interpretation:

The methyl group present at the junction of Ring A and Ring B is either axial or equatorial to Ring A and Ring B has to be given.

Concept Introduction:

The C-H bonds in the chair conformation are arranged in axial and equatorial positions. The bonds that are present parallel to the axis are axial bonds and the bonds that are present perpendicular to the axis are equatorial bonds. In cyclohexane, six hydrogens are axial and six hydrogens are equatorial.

(d)

Interpretation Introduction

Interpretation:

The methyl group present at the junction of Ring C and Ring D is either axial or equatorial has to be given.

Concept Introduction:

The C-H bonds in the chair conformation are arranged in axial and equatorial positions. The bonds that are present parallel to the axis are axial bonds and the bonds that are present perpendicular to the axis are equatorial bonds. In cyclohexane, six hydrogens are axial and six hydrogens are equatorial.

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Draw structures corresponding to the following names and give IUPAC names for the following compounds: (8 Point) a) b) c) CH3 CH2CH3 CH3CHCH2CH2CH CH3 C=C H3C H H2C=C=CHCH3 d) CI e) (3E,5Z)-2,6-Dimethyl-1,3,5,7-octatetraene f) (Z)-4-bromo-3-methyl-3-penten-1-yne g) cis-1-Bromo-2-ethylcyclopentane h) (5R)-4,4,5-trichloro-3,3-dimethyldecane

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Review: Design a total total synthesis synthesis of the following compound using methyloxacyclopropane and any other necessary reagents.

Answer 2

Question

Chapter 2, Problem 2.64P

(a)

Interpretation Introduction

Interpretation:

The conformation of rings A, B, C and D in Cholestanol has to be described.

Concept Introduction:

The conformation structures of six membered rings are given by chair forms. In the chair conformation, all C-C-C bond angles are 110.90 and the hydrogens on the adjacent carbon atoms are staggered with respect to one another. In the chair conformation, no two atoms are closely present, so, there is a little strain present in chair conformation structure of cyclohexane. The C-H bonds in the chair conformation are arranged in axial and equatorial positions. The bonds that are present parallel to the axis are axial bonds and the bonds that are present perpendicular to the axis are equatorial bonds. In cyclohexane, six hydrogens are axial and six hydrogens are equatorial.

(b)

Interpretation Introduction

Interpretation:

The hydroxyl group present on Ring A is either axial or equatorial has to be given.

Concept Introduction:

The C-H bonds in the chair conformation are arranged in axial and equatorial positions. The bonds that are present parallel to the axis are axial bonds and the bonds that are present perpendicular to the axis are equatorial bonds. In cyclohexane, six hydrogens are axial and six hydrogens are equatorial.

(c)

Interpretation Introduction

Interpretation:

The methyl group present at the junction of Ring A and Ring B is either axial or equatorial to Ring A and Ring B has to be given.

Concept Introduction:

The C-H bonds in the chair conformation are arranged in axial and equatorial positions. The bonds that are present parallel to the axis are axial bonds and the bonds that are present perpendicular to the axis are equatorial bonds. In cyclohexane, six hydrogens are axial and six hydrogens are equatorial.

(d)

Interpretation Introduction

Interpretation:

The methyl group present at the junction of Ring C and Ring D is either axial or equatorial has to be given.

Concept Introduction:

The C-H bonds in the chair conformation are arranged in axial and equatorial positions. The bonds that are present parallel to the axis are axial bonds and the bonds that are present perpendicular to the axis are equatorial bonds. In cyclohexane, six hydrogens are axial and six hydrogens are equatorial.

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Answer 3

Question

Chapter 2, Problem 2.64P

(a)

Interpretation Introduction

Interpretation:

The conformation of rings A, B, C and D in Cholestanol has to be described.

Concept Introduction:

The conformation structures of six membered rings are given by chair forms. In the chair conformation, all C-C-C bond angles are 110.90 and the hydrogens on the adjacent carbon atoms are staggered with respect to one another. In the chair conformation, no two atoms are closely present, so, there is a little strain present in chair conformation structure of cyclohexane. The C-H bonds in the chair conformation are arranged in axial and equatorial positions. The bonds that are present parallel to the axis are axial bonds and the bonds that are present perpendicular to the axis are equatorial bonds. In cyclohexane, six hydrogens are axial and six hydrogens are equatorial.

(b)

Interpretation Introduction

Interpretation:

The hydroxyl group present on Ring A is either axial or equatorial has to be given.

Concept Introduction:

The C-H bonds in the chair conformation are arranged in axial and equatorial positions. The bonds that are present parallel to the axis are axial bonds and the bonds that are present perpendicular to the axis are equatorial bonds. In cyclohexane, six hydrogens are axial and six hydrogens are equatorial.

(c)

Interpretation Introduction

Interpretation:

The methyl group present at the junction of Ring A and Ring B is either axial or equatorial to Ring A and Ring B has to be given.

Concept Introduction:

The C-H bonds in the chair conformation are arranged in axial and equatorial positions. The bonds that are present parallel to the axis are axial bonds and the bonds that are present perpendicular to the axis are equatorial bonds. In cyclohexane, six hydrogens are axial and six hydrogens are equatorial.

(d)

Interpretation Introduction

Interpretation:

The methyl group present at the junction of Ring C and Ring D is either axial or equatorial has to be given.

Concept Introduction:

The C-H bonds in the chair conformation are arranged in axial and equatorial positions. The bonds that are present parallel to the axis are axial bonds and the bonds that are present perpendicular to the axis are equatorial bonds. In cyclohexane, six hydrogens are axial and six hydrogens are equatorial.

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Answer 4

Question

Chapter 2, Problem 2.64P

(a)

Interpretation Introduction

Interpretation:

The conformation of rings A, B, C and D in Cholestanol has to be described.

Concept Introduction:

The conformation structures of six membered rings are given by chair forms. In the chair conformation, all C-C-C bond angles are 110.90 and the hydrogens on the adjacent carbon atoms are staggered with respect to one another. In the chair conformation, no two atoms are closely present, so, there is a little strain present in chair conformation structure of cyclohexane. The C-H bonds in the chair conformation are arranged in axial and equatorial positions. The bonds that are present parallel to the axis are axial bonds and the bonds that are present perpendicular to the axis are equatorial bonds. In cyclohexane, six hydrogens are axial and six hydrogens are equatorial.

(b)

Interpretation Introduction

Interpretation:

The hydroxyl group present on Ring A is either axial or equatorial has to be given.

Concept Introduction:

The C-H bonds in the chair conformation are arranged in axial and equatorial positions. The bonds that are present parallel to the axis are axial bonds and the bonds that are present perpendicular to the axis are equatorial bonds. In cyclohexane, six hydrogens are axial and six hydrogens are equatorial.

(c)

Interpretation Introduction

Interpretation:

The methyl group present at the junction of Ring A and Ring B is either axial or equatorial to Ring A and Ring B has to be given.

Concept Introduction:

The C-H bonds in the chair conformation are arranged in axial and equatorial positions. The bonds that are present parallel to the axis are axial bonds and the bonds that are present perpendicular to the axis are equatorial bonds. In cyclohexane, six hydrogens are axial and six hydrogens are equatorial.

(d)

Interpretation Introduction

Interpretation:

The methyl group present at the junction of Ring C and Ring D is either axial or equatorial has to be given.

Concept Introduction:

The C-H bonds in the chair conformation are arranged in axial and equatorial positions. The bonds that are present parallel to the axis are axial bonds and the bonds that are present perpendicular to the axis are equatorial bonds. In cyclohexane, six hydrogens are axial and six hydrogens are equatorial.

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Answer 5

Chapter 2, Problem 2.64P

(a)

Interpretation Introduction

Interpretation:

The conformation of rings A, B, C and D in Cholestanol has to be described.

Concept Introduction:

The conformation structures of six membered rings are given by chair forms. In the chair conformation, all C-C-C bond angles are 110.90 and the hydrogens on the adjacent carbon atoms are staggered with respect to one another. In the chair conformation, no two atoms are closely present, so, there is a little strain present in chair conformation structure of cyclohexane. The C-H bonds in the chair conformation are arranged in axial and equatorial positions. The bonds that are present parallel to the axis are axial bonds and the bonds that are present perpendicular to the axis are equatorial bonds. In cyclohexane, six hydrogens are axial and six hydrogens are equatorial.

(b)

Interpretation Introduction

Interpretation:

The hydroxyl group present on Ring A is either axial or equatorial has to be given.

Concept Introduction:

The C-H bonds in the chair conformation are arranged in axial and equatorial positions. The bonds that are present parallel to the axis are axial bonds and the bonds that are present perpendicular to the axis are equatorial bonds. In cyclohexane, six hydrogens are axial and six hydrogens are equatorial.

(c)

Interpretation Introduction

Interpretation:

The methyl group present at the junction of Ring A and Ring B is either axial or equatorial to Ring A and Ring B has to be given.

Concept Introduction:

The C-H bonds in the chair conformation are arranged in axial and equatorial positions. The bonds that are present parallel to the axis are axial bonds and the bonds that are present perpendicular to the axis are equatorial bonds. In cyclohexane, six hydrogens are axial and six hydrogens are equatorial.

(d)

Interpretation Introduction

Interpretation:

The methyl group present at the junction of Ring C and Ring D is either axial or equatorial has to be given.

Concept Introduction:

The C-H bonds in the chair conformation are arranged in axial and equatorial positions. The bonds that are present parallel to the axis are axial bonds and the bonds that are present perpendicular to the axis are equatorial bonds. In cyclohexane, six hydrogens are axial and six hydrogens are equatorial.

Answer 6

Chapter 2, Problem 2.64P

(a)

Interpretation Introduction

Interpretation:

The conformation of rings A, B, C and D in Cholestanol has to be described.

Concept Introduction:

The conformation structures of six membered rings are given by chair forms. In the chair conformation, all C-C-C bond angles are 110.90 and the hydrogens on the adjacent carbon atoms are staggered with respect to one another. In the chair conformation, no two atoms are closely present, so, there is a little strain present in chair conformation structure of cyclohexane. The C-H bonds in the chair conformation are arranged in axial and equatorial positions. The bonds that are present parallel to the axis are axial bonds and the bonds that are present perpendicular to the axis are equatorial bonds. In cyclohexane, six hydrogens are axial and six hydrogens are equatorial.

Answer 7

Chapter 2, Problem 2.64P

(a)

Interpretation Introduction

Interpretation:

The conformation of rings A, B, C and D in Cholestanol has to be described.

Concept Introduction:

The conformation structures of six membered rings are given by chair forms. In the chair conformation, all C-C-C bond angles are 110.90 and the hydrogens on the adjacent carbon atoms are staggered with respect to one another. In the chair conformation, no two atoms are closely present, so, there is a little strain present in chair conformation structure of cyclohexane. The C-H bonds in the chair conformation are arranged in axial and equatorial positions. The bonds that are present parallel to the axis are axial bonds and the bonds that are present perpendicular to the axis are equatorial bonds. In cyclohexane, six hydrogens are axial and six hydrogens are equatorial.

Answer 8

(b)

Interpretation Introduction

Interpretation:

The hydroxyl group present on Ring A is either axial or equatorial has to be given.

Concept Introduction:

The C-H bonds in the chair conformation are arranged in axial and equatorial positions. The bonds that are present parallel to the axis are axial bonds and the bonds that are present perpendicular to the axis are equatorial bonds. In cyclohexane, six hydrogens are axial and six hydrogens are equatorial.

Answer 9

(b)

Interpretation Introduction

Interpretation:

The hydroxyl group present on Ring A is either axial or equatorial has to be given.

Concept Introduction:

The C-H bonds in the chair conformation are arranged in axial and equatorial positions. The bonds that are present parallel to the axis are axial bonds and the bonds that are present perpendicular to the axis are equatorial bonds. In cyclohexane, six hydrogens are axial and six hydrogens are equatorial.

Answer 10

(c)

Interpretation Introduction

Interpretation:

The methyl group present at the junction of Ring A and Ring B is either axial or equatorial to Ring A and Ring B has to be given.

Concept Introduction:

The C-H bonds in the chair conformation are arranged in axial and equatorial positions. The bonds that are present parallel to the axis are axial bonds and the bonds that are present perpendicular to the axis are equatorial bonds. In cyclohexane, six hydrogens are axial and six hydrogens are equatorial.

Answer 11

(c)

Interpretation Introduction

Interpretation:

The methyl group present at the junction of Ring A and Ring B is either axial or equatorial to Ring A and Ring B has to be given.

Concept Introduction:

The C-H bonds in the chair conformation are arranged in axial and equatorial positions. The bonds that are present parallel to the axis are axial bonds and the bonds that are present perpendicular to the axis are equatorial bonds. In cyclohexane, six hydrogens are axial and six hydrogens are equatorial.

Answer 12

(d)

Interpretation Introduction

Interpretation:

The methyl group present at the junction of Ring C and Ring D is either axial or equatorial has to be given.

Concept Introduction:

The C-H bonds in the chair conformation are arranged in axial and equatorial positions. The bonds that are present parallel to the axis are axial bonds and the bonds that are present perpendicular to the axis are equatorial bonds. In cyclohexane, six hydrogens are axial and six hydrogens are equatorial.

Answer 13

(d)

Interpretation Introduction

Interpretation:

The methyl group present at the junction of Ring C and Ring D is either axial or equatorial has to be given.

Concept Introduction:

The C-H bonds in the chair conformation are arranged in axial and equatorial positions. The bonds that are present parallel to the axis are axial bonds and the bonds that are present perpendicular to the axis are equatorial bonds. In cyclohexane, six hydrogens are axial and six hydrogens are equatorial.

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Ch. 2.2 - Do the line-angle formulas in each pair represent...Ch. 2.2 - Draw line-angle formulas for the three...Ch. 2.3 - Write IUPAC names for these alkanes.Ch. 2.4 - Combine the proper prefix, infix, and suffix and...Ch. 2.4 - Write the molecular formula, IUPAC name, and...Ch. 2.4 - Write molecular formulas for each bicycloalkane,...Ch. 2.4 - Prob. 2.7P Ch. 2.5 - For 1,2-dichloroethane: (a) Draw Newman...Ch. 2.5 - Following is a chair conformation of cyclohexane...Ch. 2.5 - Draw the alternative chair conformation for the...

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