1. For the following NMR data for 4-vinylpyridine, i) label the important features of the ¹H NMR spectrum, ii) label the important features of the COSY (2D) spectrum, and iii) label the important features of the DEPT experiment. 90 135 8.0 7.0 1.11 ell 6.0 5.0 100 -6.0 -7.0 -8.0

1. For the following NMR data for 4-vinylpyridine, i) label the important features of the ¹H NMR spectrum, ii) label the important features of the COSY (2D) spectrum, and iii) label the important features of the DEPT experiment. 90 135 8.0 7.0 1.11 ell 6.0 5.0 100 -6.0 -7.0 -8.0

Macroscale and Microscale Organic Experiments

7th Edition

ISBN:9781305577190

Author:Kenneth L. Williamson, Katherine M. Masters

Publisher:Kenneth L. Williamson, Katherine M. Masters

Chapter19: Alkenes From Alcohols: Cyclohexene From Cyclohexanol

Section: Chapter Questions

Problem 1Q

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Concept explainers

NMR Spectroscopy

NMR stands for Nuclear Magnetic Resonance in which the study of different molecules is done based on the interaction of radiofrequency electromagnetic radiations with the nuclei of molecules placed in a strong magnetic field. A precise study of spectra of visible light and all bands of electromagnetic radiation is called spectroscopy.

Question

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Please explain how to figure out, esp. COSY

1. For the following NMR data for 4-vinylpyridine,
i) label the important features of the ¹H NMR spectrum,
ii) label the important features of the COSY (2D) spectrum, and
iii) label the important features of the DEPT experiment.
90
135
8.0
Lell
7.0
5
3
"
6.0
5.0
100
-5.0
-6.0
-7.0
-8.0

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Step 1: 1H NMR assignment to the structure

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Step 2: 1H-NMR spectra

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Step 3: Explanation with tabular representation

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Step 4: COSY interpretation

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Step 5: COSY spectrum assignment

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Step 6: DEPT analysis

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