Newman projections must be utilized to explain why trans-stilbene is the major product when (S)-1-bromo-1,2-diphenylethane is used. Concept Introduction : During the elimination reaction, anti-periplanar groups are removed to form a double bond. Newman projection is the representation of a molecule when it is viewed through a particular bond between two atoms.

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Answer 1

Question

Chapter 7, Problem 73PP

(a)

Interpretation Introduction

Interpretation:

Newman projections must be utilized to explain why trans-stilbene is the major product when (S)-1-bromo-1,2-diphenylethane is used.

Concept Introduction :

During the elimination reaction, anti-periplanar groups are removed to form a double bond. Newman projection is the representation of a molecule when it is viewed through a particular bond between two atoms.

(b)

Interpretation Introduction

Interpretation:

Newman projections must be utilized to explain why trans-stilbene is the major product when (R)-1-bromo-1,2-diphenylethane is employed.

Concept Introduction :

During the elimination reaction, anti-periplanar groups are removed to form a double bond. Newman projection is the representation of a molecule when it is viewed through a particular bond between two atoms.

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2. Predict the NMR spectra for each of these two compounds by listing, in the NMR tables below, the chemical shift, the splitting, and the number of hydrogens associated with each predicted peak. Sort the peaks from largest chemical shift to lowest. **Not all slots must be filled** Peak Chemical Shift (d) 5.7 1 Multiplicity multiplate .......... 5.04 double of doublet 2 4.98 double of doublet 3 4.05 doublet of quartet 4 5 LO 3.80 quartet 1.3 doublet 6 Peak Chemical Shift (d) Multiplicity

Interpreting NMR spectra is a skill that often requires some amount of practice, which, in turn, necessitates access to a collection of NMR spectra. Beyond Labz Organic Synthesis and Organic Qualitative Analysis have spectral libraries containing over 700 1H NMR spectra. In this assignment, you will take advantage of this by first predicting the NMR spectra for two closely related compounds and then checking your predictions by looking up the actual spectra in the spectra library. After completing this assignment, you may wish to select other compounds for additional practice. 1. Write the IUPAC names for the following two structures: Question 2 Question 3 2. Predict the NMR spectra for each of these two compounds by listing, in the NMR tables below, the chemical shift, the splitting, and the number of hydrogens associated with each predicted peak. Sort the peaks from largest chemical shift to lowest. **Not all slots must be filled**

11:14 ... worksheets.beyondlabz.com 3. To check your predictions, click this link for Interpreting NMR Spectra 1. You will see a list of all the - compounds in the spectra library in alphabetical order by IUPAC name. Hovering over a name in the list will show the structure on the chalkboard. The four buttons on the top of the Spectra tab in the tray are used to select the different spectroscopic techniques for the selected compound. Make sure the NMR button has been selected. 4. Scroll through the list of names to find the names for the two compounds you have been given and click on the name to display the NMR spectrum for each. In the NMR tables below, list the chemical shift, the splitting, and the number of hydrogens associated with each peak for each compound. Compare your answers to your predictions. **Not all slots must be filled** Peak Chemical Shift (d) Multiplicity 1 2 3 4 5

Answer 2

Question

Chapter 7, Problem 73PP

(a)

Interpretation Introduction

Interpretation:

Newman projections must be utilized to explain why trans-stilbene is the major product when (S)-1-bromo-1,2-diphenylethane is used.

Concept Introduction :

During the elimination reaction, anti-periplanar groups are removed to form a double bond. Newman projection is the representation of a molecule when it is viewed through a particular bond between two atoms.

(b)

Interpretation Introduction

Interpretation:

Newman projections must be utilized to explain why trans-stilbene is the major product when (R)-1-bromo-1,2-diphenylethane is employed.

Concept Introduction :

During the elimination reaction, anti-periplanar groups are removed to form a double bond. Newman projection is the representation of a molecule when it is viewed through a particular bond between two atoms.

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Answer 3

Question

Chapter 7, Problem 73PP

(a)

Interpretation Introduction

Interpretation:

Newman projections must be utilized to explain why trans-stilbene is the major product when (S)-1-bromo-1,2-diphenylethane is used.

Concept Introduction :

During the elimination reaction, anti-periplanar groups are removed to form a double bond. Newman projection is the representation of a molecule when it is viewed through a particular bond between two atoms.

(b)

Interpretation Introduction

Interpretation:

Newman projections must be utilized to explain why trans-stilbene is the major product when (R)-1-bromo-1,2-diphenylethane is employed.

Concept Introduction :

During the elimination reaction, anti-periplanar groups are removed to form a double bond. Newman projection is the representation of a molecule when it is viewed through a particular bond between two atoms.

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Answer 4

Question

Chapter 7, Problem 73PP

(a)

Interpretation Introduction

Interpretation:

Newman projections must be utilized to explain why trans-stilbene is the major product when (S)-1-bromo-1,2-diphenylethane is used.

Concept Introduction :

During the elimination reaction, anti-periplanar groups are removed to form a double bond. Newman projection is the representation of a molecule when it is viewed through a particular bond between two atoms.

(b)

Interpretation Introduction

Interpretation:

Newman projections must be utilized to explain why trans-stilbene is the major product when (R)-1-bromo-1,2-diphenylethane is employed.

Concept Introduction :

During the elimination reaction, anti-periplanar groups are removed to form a double bond. Newman projection is the representation of a molecule when it is viewed through a particular bond between two atoms.

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Answer 5

Chapter 7, Problem 73PP

(a)

Interpretation Introduction

Interpretation:

Newman projections must be utilized to explain why trans-stilbene is the major product when (S)-1-bromo-1,2-diphenylethane is used.

Concept Introduction :

During the elimination reaction, anti-periplanar groups are removed to form a double bond. Newman projection is the representation of a molecule when it is viewed through a particular bond between two atoms.

(b)

Interpretation Introduction

Interpretation:

Newman projections must be utilized to explain why trans-stilbene is the major product when (R)-1-bromo-1,2-diphenylethane is employed.

Concept Introduction :

During the elimination reaction, anti-periplanar groups are removed to form a double bond. Newman projection is the representation of a molecule when it is viewed through a particular bond between two atoms.

Answer 6

Chapter 7, Problem 73PP

(a)

Interpretation Introduction

Interpretation:

Newman projections must be utilized to explain why trans-stilbene is the major product when (S)-1-bromo-1,2-diphenylethane is used.

Concept Introduction :

During the elimination reaction, anti-periplanar groups are removed to form a double bond. Newman projection is the representation of a molecule when it is viewed through a particular bond between two atoms.

Answer 7

Chapter 7, Problem 73PP

(a)

Interpretation Introduction

Interpretation:

Newman projections must be utilized to explain why trans-stilbene is the major product when (S)-1-bromo-1,2-diphenylethane is used.

Concept Introduction :

During the elimination reaction, anti-periplanar groups are removed to form a double bond. Newman projection is the representation of a molecule when it is viewed through a particular bond between two atoms.

Answer 8

(b)

Interpretation Introduction

Interpretation:

Newman projections must be utilized to explain why trans-stilbene is the major product when (R)-1-bromo-1,2-diphenylethane is employed.

Concept Introduction :

During the elimination reaction, anti-periplanar groups are removed to form a double bond. Newman projection is the representation of a molecule when it is viewed through a particular bond between two atoms.

Answer 9

(b)

Interpretation Introduction

Interpretation:

Newman projections must be utilized to explain why trans-stilbene is the major product when (R)-1-bromo-1,2-diphenylethane is employed.

Concept Introduction :

During the elimination reaction, anti-periplanar groups are removed to form a double bond. Newman projection is the representation of a molecule when it is viewed through a particular bond between two atoms.

Answer 10

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Answer 13

Ch. 7.2 - Prob. 1CC Ch. 7.3 - Prob. 2CC Ch. 7.3 - Prob. 1LTS Ch. 7.3 - Prob. 3PTS Ch. 7.3 - Prob. 4ATS Ch. 7.3 - Prob. 2LTS Ch. 7.3 - Prob. 5PTS Ch. 7.3 - Prob. 6ATS Ch. 7.3 - Prob. 7CC Ch. 7.4 - Prob. 8CC

Solution Summary: The author explains that Newman projections must be utilized to explain why trans-stilbene is the major product when (S)-1-bromo-1,2-diphenylethane is employed.

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