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Chapter 22: Problem 3

What is wrong with the following names? Give the correct name for each compound. a. 2 -ethylpropane b. 5 -iodo- 5,6 -dimethylhexane c. cis-4-methyl-3-pentene d. 2 -bromo-3-butanol

Short Answer

Expert verified
The correct names for the given compounds are: a. 2-methylbutane b. 5-iodo-3,4-dimethylhexane c. cis-3-methyl-2-pentene d. 2-bromo-1-butanol

Step by step solution

01

Identify the error in the given name.

The given name has a side chain (ethyl) on the main chain (propane). The numbering of the side chain from the main chain is not correct.
02

Correct the name.

The correct name of the compound should be: 2-methylbutane. We needed to renumber the carbon atoms and treat the ethyl group as a methyl group to be in compliance with IUPAC rules. \(\) b. 5 -iodo- 5,6 -dimethylhexane
03

Identify the error in the given name.

The numbering of the side chains (methyl groups) is not correct.
04

Correct the name.

The correct name of the compound should be: 5-iodo-3,4-dimethylhexane. The carbon atoms should be numbered in such a way that the side chains have the lowest possible numbers. \(\) c. cis-4-methyl-3-pentene
05

Identify the error in the given name.

The numbering of the carbon atoms (starting from the double bond) is not correct.
06

Correct the name.

The correct name of the compound should be: cis-3-methyl-2-pentene. The double bond has priority when numbering the carbon atoms. In this case, numbering should start from the double bond. \(\) d. 2 -bromo-3-butanol
07

Identify the error in the given name.

There's an issue with the numbering of the alcohol group (OH).
08

Correct the name.

The correct name of the compound should be: 2-bromo-1-butanol. Following IUPAC rules, the alcohol group (OH) should take priority in numbering over the bromo group.

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Most popular questions from this chapter

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