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Chapter 24: Problem 31

Write structures for the following compounds: (a) 1 -bromo- 3 -methylbenzene, (b) 1 -chloro- 2 -propylbenzene, (c) 1,2,4,5 -tetramethylbenzene.

Short Answer

Expert verified
Structures for (a) 1-bromo-3-methylbenzene: A benzene ring with bromine atom at position 1 and a methyl group at position 3. (b) 1-chloro-2-propylbenzene: A benzene ring with chlorine atom at position 1 and a propyl group at position 2. (c) 1,2,4,5-tetramethylbenzene: A benzene ring with four methyl groups at positions 1, 2, 4, and 5.

Step by step solution

01

Draw Structure for 1-bromo-3-methylbenzene

First, draw a benzene ring, a hexagon with a circle inside it to denote delocalized π electrons. Then, place a bromine (Br) atom at position 1 and a methyl group (CH3) at position 3 on the benzene ring. Make sure to count the carbon atoms in the correct direction in order to place the substituents at the right positions.
02

Draw Structure for 1-chloro-2-propylbenzene

First, draw a benzene ring. Then, place a chlorine (Cl) atom at position 1. Following this, add a propyl group (C3H7, drawn as -C3H7) at position 2 on the benzene ring. Remember to represent the three Carbon atoms with a chain of three lines coming out from the ring.
03

Draw Structure for 1,2,4,5-tetramethylbenzene

First, draw a benzene ring. Then, place four methyl groups (CH3) at positions 1, 2, 4, and 5 on the benzene ring. The resulting structure will have methyl groups at four places on the benzene ring.

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Most popular questions from this chapter

Alkenes exhibit geometric isomerism because rotation about the \(\mathrm{C} \equiv \mathrm{C}\) bond is restricted. Explain.

When a mixture of methane and bromine vapor is exposed to light, the following reaction occurs slowly: \(\mathrm{CH}_{4}(g)+\mathrm{Br}_{2}(g) \longrightarrow \mathrm{CH}_{3} \mathrm{Br}(g)+\mathrm{HBr}(g)\) When a mixture of methane and bromine vapor is exposed to light, the following reaction occurs slowly:

Write structural formulas for the following organic compounds: (a) 3 -methylhexane, (b) 1,3,5 -trichlorocyclohexane, (c) 2,3 -dimethylpentane, (d) 2 -bromo4 -phenylpentane, (e) 3,4,5 -trimethyloctane.

State which member of each of the following pairs of compounds is the more reactive and explain why: (a) propane and cyclopropane, (b) ethylene and methane, (c) acetaldehyde and acetone.

What factor determines whether a carbon atom in a compound is chiral?
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