a) Methionine Interpretation: The functional group present in the following molecules is to be identified. Concept introduction: Methionine is one of the 20 amino acids that are needed for daily life in animals. It is one of the two amino acids that contain the element sulphur. The chemical formula of methionine is C 5 H 11 NO 2 S.

Question

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

Answer 1

Question

Chapter 3.1, Problem 1P

Interpretation Introduction

a) Methionine

Interpretation:

The functional group present in the following molecules is to be identified.

Concept introduction:

Methionine is one of the 20 amino acids that are needed for daily life in animals. It is one of the two amino acids that contain the element sulphur. The chemical formula of methionine is C₅H₁₁NO₂S.

Interpretation Introduction

b) Ibuprofen

Interpretation:

The functional group present in the following molecules is to be identified.

Concept introduction:

Ibuprofen is an aromatic compound. This is the active ingredients in over the counter drugs used as analgesics, antipyretics or anti–inflammatory agents. The chemical formula of Ibuprofen is C₁₃H₁₈O₂.

Interpretation Introduction

c) Capsaicin

Interpretation:

The functional group present in the following molecules is to be identified.

Concept introduction:

Capsaicin is an active compound of chilli peppers belonging to the genus capsicum. It is an irritant for mammals including humans. The chemical formula of capsaicin is C₁₈H₂₇NO₃.

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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 3.1, Problem 1P

Interpretation Introduction

a) Methionine

Interpretation:

The functional group present in the following molecules is to be identified.

Concept introduction:

Methionine is one of the 20 amino acids that are needed for daily life in animals. It is one of the two amino acids that contain the element sulphur. The chemical formula of methionine is C₅H₁₁NO₂S.

Interpretation Introduction

b) Ibuprofen

Interpretation:

The functional group present in the following molecules is to be identified.

Concept introduction:

Ibuprofen is an aromatic compound. This is the active ingredients in over the counter drugs used as analgesics, antipyretics or anti–inflammatory agents. The chemical formula of Ibuprofen is C₁₃H₁₈O₂.

Interpretation Introduction

c) Capsaicin

Interpretation:

The functional group present in the following molecules is to be identified.

Concept introduction:

Capsaicin is an active compound of chilli peppers belonging to the genus capsicum. It is an irritant for mammals including humans. The chemical formula of capsaicin is C₁₈H₂₇NO₃.

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Answer 3

Question

Chapter 3.1, Problem 1P

Interpretation Introduction

a) Methionine

Interpretation:

The functional group present in the following molecules is to be identified.

Concept introduction:

Methionine is one of the 20 amino acids that are needed for daily life in animals. It is one of the two amino acids that contain the element sulphur. The chemical formula of methionine is C₅H₁₁NO₂S.

Interpretation Introduction

b) Ibuprofen

Interpretation:

The functional group present in the following molecules is to be identified.

Concept introduction:

Ibuprofen is an aromatic compound. This is the active ingredients in over the counter drugs used as analgesics, antipyretics or anti–inflammatory agents. The chemical formula of Ibuprofen is C₁₃H₁₈O₂.

Interpretation Introduction

c) Capsaicin

Interpretation:

The functional group present in the following molecules is to be identified.

Concept introduction:

Capsaicin is an active compound of chilli peppers belonging to the genus capsicum. It is an irritant for mammals including humans. The chemical formula of capsaicin is C₁₈H₂₇NO₃.

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Answer 4

Question

Chapter 3.1, Problem 1P

Interpretation Introduction

a) Methionine

Interpretation:

The functional group present in the following molecules is to be identified.

Concept introduction:

Methionine is one of the 20 amino acids that are needed for daily life in animals. It is one of the two amino acids that contain the element sulphur. The chemical formula of methionine is C₅H₁₁NO₂S.

Interpretation Introduction

b) Ibuprofen

Interpretation:

The functional group present in the following molecules is to be identified.

Concept introduction:

Ibuprofen is an aromatic compound. This is the active ingredients in over the counter drugs used as analgesics, antipyretics or anti–inflammatory agents. The chemical formula of Ibuprofen is C₁₃H₁₈O₂.

Interpretation Introduction

c) Capsaicin

Interpretation:

The functional group present in the following molecules is to be identified.

Concept introduction:

Capsaicin is an active compound of chilli peppers belonging to the genus capsicum. It is an irritant for mammals including humans. The chemical formula of capsaicin is C₁₈H₂₇NO₃.

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Answer 5

Chapter 3.1, Problem 1P

Interpretation Introduction

a) Methionine

Interpretation:

The functional group present in the following molecules is to be identified.

Concept introduction:

Methionine is one of the 20 amino acids that are needed for daily life in animals. It is one of the two amino acids that contain the element sulphur. The chemical formula of methionine is C₅H₁₁NO₂S.

Interpretation Introduction

b) Ibuprofen

Interpretation:

The functional group present in the following molecules is to be identified.

Concept introduction:

Ibuprofen is an aromatic compound. This is the active ingredients in over the counter drugs used as analgesics, antipyretics or anti–inflammatory agents. The chemical formula of Ibuprofen is C₁₃H₁₈O₂.

Interpretation Introduction

c) Capsaicin

Interpretation:

The functional group present in the following molecules is to be identified.

Concept introduction:

Capsaicin is an active compound of chilli peppers belonging to the genus capsicum. It is an irritant for mammals including humans. The chemical formula of capsaicin is C₁₈H₂₇NO₃.

Answer 6

Chapter 3.1, Problem 1P

Interpretation Introduction

a) Methionine

Interpretation:

The functional group present in the following molecules is to be identified.

Concept introduction:

Methionine is one of the 20 amino acids that are needed for daily life in animals. It is one of the two amino acids that contain the element sulphur. The chemical formula of methionine is C₅H₁₁NO₂S.

Answer 7

Chapter 3.1, Problem 1P

Interpretation Introduction

a) Methionine

Interpretation:

The functional group present in the following molecules is to be identified.

Concept introduction:

Methionine is one of the 20 amino acids that are needed for daily life in animals. It is one of the two amino acids that contain the element sulphur. The chemical formula of methionine is C₅H₁₁NO₂S.

Answer 8

Interpretation Introduction

b) Ibuprofen

Interpretation:

The functional group present in the following molecules is to be identified.

Concept introduction:

Ibuprofen is an aromatic compound. This is the active ingredients in over the counter drugs used as analgesics, antipyretics or anti–inflammatory agents. The chemical formula of Ibuprofen is C₁₃H₁₈O₂.

Answer 9

Interpretation Introduction

b) Ibuprofen

Interpretation:

The functional group present in the following molecules is to be identified.

Concept introduction:

Ibuprofen is an aromatic compound. This is the active ingredients in over the counter drugs used as analgesics, antipyretics or anti–inflammatory agents. The chemical formula of Ibuprofen is C₁₃H₁₈O₂.

Answer 10

Interpretation Introduction

c) Capsaicin

Interpretation:

The functional group present in the following molecules is to be identified.

Concept introduction:

Capsaicin is an active compound of chilli peppers belonging to the genus capsicum. It is an irritant for mammals including humans. The chemical formula of capsaicin is C₁₈H₂₇NO₃.

Answer 11

Interpretation Introduction

c) Capsaicin

Interpretation:

The functional group present in the following molecules is to be identified.

Concept introduction:

Capsaicin is an active compound of chilli peppers belonging to the genus capsicum. It is an irritant for mammals including humans. The chemical formula of capsaicin is C₁₈H₂₇NO₃.

Answer 12

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Answer 23

Ch. 3.1 - Prob. 1P Ch. 3.1 - Prob. 2P Ch. 3.1 - Identify the functional groups in the following...Ch. 3.2 - Draw structures of the five isomers of C6H14.Ch. 3.2 - Propose structures that meet the following...Ch. 3.2 - Prob. 6P Ch. 3.3 - Draw the eight 5-carbon alkyl groups (pentyl...Ch. 3.3 - Identify the carbon atoms in the following...Ch. 3.3 - Prob. 9P Ch. 3.3 - Prob. 10P

Solution Summary: The author explains that Methionine is one of the 20 amino acids that are needed for daily life in animals.

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Chapter 3 Solutions