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Chapter 22: Problem 27

Give the structure for each of the following. a. 3 -hexene b. 2,4 -heptadiene c. 2 -methyl-3-octene

Short Answer

Expert verified
a. 3-hexene: \(\mathrm{CH_2=CH(CH_2)_3CH_3}\) b. 2,4-heptadiene: \(\mathrm{CH_2=CHCH_2CH=CH(CH_2)_2CH_3}\) c. 2-methyl-3-octene: \(\mathrm{CH_3CH(CH_3)CH=CH(CH_2)_4CH_3}\)

Step by step solution

01

Draw the main carbon chain

Based on the prefix in each compound, we will draw the main carbon chain with the correct number of carbon atoms. a. Hex (6 carbon atoms) b. Hept (7 carbon atoms) c. Oct (8 carbon atoms)
02

Add double bonds

Next, we will add the double bonds to the main chain according to the suffix and position numbers given in the compound name. a. 3-hexene: Add a double bond between carbons 3 and 4. b. 2,4-heptadiene: Add a double bond between carbons 2 and 3 and another between carbons 4 and 5. c. 2-methyl-3-octene: Add a double bond between carbons 3 and 4.
03

Add additional groups

Now we will add any additional groups (such as methyl) to the main carbon chain, at the positions indicated in the compound name. a. 3-hexene: No additional groups. b. 2,4-heptadiene: No additional groups. c. 2-methyl-3-octene: Add a methyl group to carbon 2.
04

Draw the structures

With all the necessary components in place, we can now draw the structures of the given compounds. a. 3-hexene: \(\mathrm{CH_2=CH(CH_2)_3CH_3}\) b. 2,4-heptadiene: \(\mathrm{CH_2=CHCH_2CH=CH(CH_2)_2CH_3}\) c. 2-methyl-3-octene: \(\mathrm{CH_3CH(CH_3)CH=CH(CH_2)_4CH_3}\)

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