(a) Interpretation: A structural formula for anisole should be drawn showing positions of multiple bonds and lone pairs. Concept introduction: The strategy for identifying multiple bonds and lone pairs in an organic molecule is to look at each atom of the structure, what is needed to complete their octet and a bond or a lone pair, (except hydrogen) should be determined. Elements in the different groups of the periodic table can form a different number of bonds.

Question

The curved arrow notation introduced in Section 1.6B is a powerfulmethod used by organic chemists to show the movement of electronsnot only in resonance structures, but also in chemical reactions.Because each curved arrow shows the movement of two electrons,following the curved arrows illustrates what bonds are broken andformed in a reaction. Consider the following three-step process. (a) Addcurved arrows in Step [1] to show the movement of electrons. (b) Use thecurved arrows drawn in Step [2] to identify the structure of X. X isconverted in Step [3] to phenol and HCl.

Answer 1

Question

Chapter 7, Problem 7.20A

Interpretation Introduction

(a)

Interpretation:

A structural formula for anisole should be drawn showing positions of multiple bonds and lone pairs.

Concept introduction:

The strategy for identifying multiple bonds and lone pairs in an organic molecule is to look at each atom of the structure, what is needed to complete their octet and a bond or a lone pair, (except hydrogen) should be determined. Elements in the different groups of the periodic table can form a different number of bonds.

Interpretation Introduction

(b)

Interpretation:

Using curved arrows, the method of converting between the original structure and two additional resonance structures should be shown.

Concept introduction:

Resonance structures are two or more electron-dot structures that describe the electronic bonding of a particular molecule. Resonance structures can be used to indicate the delocalized electrons which cannot be shown by a single electron-dot structure. The average of all resonance structures is called resonance hybrid.

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The curved arrow notation introduced in Section 1.6B is a powerfulmethod used by organic chemists to show the movement of electronsnot only in resonance structures, but also in chemical reactions.Because each curved arrow shows the movement of two electrons,following the curved arrows illustrates what bonds are broken andformed in a reaction. Consider the following three-step process. (a) Addcurved arrows in Step [1] to show the movement of electrons. (b) Use thecurved arrows drawn in Step [2] to identify the structure of X. X isconverted in Step [3] to phenol and HCl.

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The curved arrow notation introduced in Section 1.6B is a powerful method used by organic chemists to show the movement of electrons not only in resonance structures, but also in chemical reactions.Because each curved arrow shows the movement of two electrons, following the curved arrows illustrates what bonds are broken and formed in a reaction. Consider the following three-step process. (a) Add curved arrows in Step [1] to show the movement of electrons. (b) Use the curved arrows drawn in Step [2] to identify the structure of X. X is converted in Step [3] to phenol and HCl.