Chapter 14, Problem 65P

Interpretation Introduction

Interpretation:

Each proton in $\text{2-propen-1-ol}$ that give signal in its ${}^1\text{H NMR}$ spectrum has to be labelled.

Concept introduction:

The ${}^1\text{H NMR}$ spectrum of a compound provides some vital information that is required to predict the structure of the compound.  The chemical shift values can predict the groups that are present in the molecule.  The splitting of signals as per the $\left(N+1\right)$ rule predicts the number of hydrogens or protons attached to the adjacent carbon in a carbon chain of a compound. With this information, the structure of the compound can be predicted.

When the two hydrogens bonded to a carbon atom results in the formation of diastereoisomer on replacing each with some another group like deuterium, then the two hydrogens are known as diastereotopic hydrogens.  A diastereotopic pair of hydrogens produces two signal in ${}^1\text{H NMR}$ spectra.