Organic Chemistry
Organic Chemistry
3rd Edition
ISBN: 9781119338352
Author: Klein
Publisher: WILEY
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Chapter 17, Problem 70CP
Interpretation Introduction

Interpretation: Reason for the methyl groups shift from 3.9 ppm to 1.8 ppm in the 1H NMR spectrum of the given compound has to be explained

Concept Introduction:

1H NMR spectroscopy: It is the study of the interaction between electromagnetic radiation and the protons in the compound

Chemical shift: The frequency of the proton signal in the spectrum with reference to the standard compound  which may be TMS(Tetramethylsilane) shows signal at 0 ppm(parts per million).

The conditions for aromatic compound are,

  • It should be cyclic
  • It should be planar (all atoms in the same plane)
  • It must obey the Huckel’s rule (have Organic Chemistry, Chapter 17, Problem 70CP electrons.)
  • It must be conjugated π system(all carbon should be in sp2 hybridized state)

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Chapter 17 Solutions

Organic Chemistry

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Coenzymes and cofactors; Author: CH15 SWAYAM Prabha IIT Madras;https://www.youtube.com/watch?v=bubY2Nm7hVM;License: Standard YouTube License, CC-BY
Aromaticity and Huckel's Rule; Author: Professor Dave Explains;https://www.youtube.com/watch?v=7-BguH4_WBQ;License: Standard Youtube License