13. Alkenes, Alkynes, and Aromatic Compounds

Draw all structural isomers for C₃H₈O.

Draw a constitutional isomer of butane.

Provide a cis isomer for the following compound.

If one compound has the formula C₅H₁₀ and another has the formula C₄H₁₀ are the two compounds isomers? Explain.

Write condensed structures for the following molecular formulas. More than one isomer will be required for each.

Isomers of C₈H₁₈ that contain two methyl groups and a longest chain of 4 carbons

How many straight-chain isomers can you write that fit the following descriptions? See Worked Example 12.12 for guidance.

Amines (―NH₂) with a longest chain of 7 carbons

How many isomers can you write that fit the following descriptions? See Worked Example 12.12 for guidance.

Alcohols (―OH) formed from 2-methylhexane

Which of the following pairs of structures are identical, which are isomers, and which are unrelated? <IMAGE>

Draw the condensed structural formulas for all the possible alkane isomers that have a total of six carbon atoms and a four-carbon chain. (11.3)

Give IUPAC names for the five isomers with the formula C₆H₁₄.

Predict the products of the following reactions:

e. <IMAGE>

Draw the structural formulas and name all cyclic isomers with the formula C₅H₁₀.

Which of the following substances exist as can cis–trans isomers? Draw both isomers for those that do.

a. 2,3-Dimethyl-2-pentene (condensed structures only)

b. 2-Methyl-2-hexene (both condensed and line structures)

c. 2-Hexene (line structures only)

Write structural formulas for compounds that meet the following descriptions:

a. An alkene, C₆H₁₂, that cannot have cis–trans isomers and whose longest chain is 5 carbons long

Write structural formulas for compounds that meet the following descriptions:

b. An alkene with a chemical formula of C₁₀H₁₂, that has cis–trans isomers and contains a benzene ring.