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Organic Chemistry

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Aromatic Compounds

Question
12 out of 16
 

The earliest predictions about the structure of benzene could not completely explain some of its properties. Later it was found that benzene has a cyclic structure which is commonly represented as follows:

image\27771 ch 18 passage 1.png

These two structures are resonance structures of benzene. Benzene is also commonly represented as shown below:

image\27782 ch 18 passage 1.png

A series of reactions were conducted using benzene and other aromatic compounds.

Reaction 1

In Reaction 1, benzene was reacted with n-propyl chloride in the presence of AlCl3.

Reaction 2

Nitrobenzene was reacted with nitric acid and sulfuric acid. The reaction occurred as follows:


image\Ch 18 pass react 2.png


Alkoxy group is best described as:

A An ortho, para-director, and an activating group.
B An ortho, para-director, and a deactivating group.
C A meta-director, and an activating group.
D A meta-director, and a deactivating group.
Ans. A An alkoxy group can be represented as -OR, where R stands for an alkyl group. It is an ortho/para-directing group and also a good activating group.

Aromatic Compounds Flashcard List

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