4. Alkanes and Cycloalkanes

For each molecular formula, draw all the isomeric alkynes, and give their IUPAC names. Circle the acetylenic hydrogen of each terminal alkyne.

(a) C₅H₈ (three isomers)

Identify the allylic carbon(s) in the following molecules.

(a)

Give the systematic (IUPAC) names of the following alkenes.

(d)

(e)

Identify the following halogen-containing compounds as a haloalkane, haloalkene, or haloarene.

(e)

Draw the condensed and skeletal structures for each of the following:

c. isopropylacetylene

Draw the molecular orbital picture of but-2-yne.

What is the correct IUPAC name for the following alkene: ${\mathrm{CH}}_2$=${\mathrm{CH}}_2$?

Which of the following is the correct IUPAC name for the compound commonly known as $2$-vinylpentane?

Which of the following is the correct structure for $1,4-\mathrm{dimethylbenzene}$?

Given the following structures, select the correct IUPAC name for the compound: ${\mathrm{CH}}_3$${\mathrm{CH}}_2$C=CH${\mathrm{CH}}_3$.

Which of the following molecules is an alkene?

Which of the following is the correct IUPAC name for one of the three structural isomers of alkenes with the molecular formula $C_5{H}_{10}$?

Which of the following is the correct IUPAC name for the compound with the structure ${\mathrm{CH}}_2-{\mathrm{CH}}_2-{\mathrm{CH}}_2-{\mathrm{CH}}_2={\mathrm{CH}}_2$?

Which of the following is the correct IUPAC name for the compound commonly known as $n$-(2-hydroxy-3-methoxybenzyl)-$p$-methylaniline?

Which of the following is the correct structure for $\left(z\right)$-$1,3,5$-tribromo-$2$-pentene?