4. Alkanes and Cycloalkanes

1. Determine which of the following compounds show cis-trans isomerism.

2. Draw and name the cis and trans (or Z and E) isomers of those that do.

e. 2,3-dimethylpent-2-ene

f. 3,4-dibromocyclopentene

1. Determine which of the following compounds show cis-trans isomerism.

2. Draw and name the cis and trans (or Z and E) isomers of those that do.

a. hex-3-ene

b.buta-1,3-diene

Determine which compounds show cis-trans isomerism. Draw and label the isomers, using both the cis-trans and E-Z nomenclatures where applicable.

c. hex-3-ene

d. 1,1-dibromopropene

Some of the following examples can show geometric isomerism, and some cannot. For the ones that can, draw all the geometric isomers, and assign complete names using the E-Z system.

(i)

Some of the following examples can show geometric isomerism, and some cannot. For the ones that can, draw all the geometric isomers, and assign complete names using the E-Z system.

(g)

(h)

Some of the following examples can show geometric isomerism, and some cannot. For the ones that can, draw all the geometric isomers, and assign complete names using the E-Z system.

e. 3-ethyl-5-methyloct-3-ene

f. 3,7-dichloroocta-2,5-diene

1. Determine which of the following compounds show cis-trans isomerism.

2. Draw and name the cis and trans (or Z and E) isomers of those that do.

c. hexa-2,4-diene

d. 3-methylpent-2-ene

Give a correct name for each compound.

(c)

(d)

What is each compound's systematic name?

b.

The following names are all incorrect. Draw the structure represented by the incorrect name (or a consistent structure if the name is ambiguous), and give your drawing the correct name.

a. cis-dimethylpent-2-ene

b. 3-vinylhex-4-ene

Give a correct name for each compound.

(e)

(f)

Which of the following alkenes are E and which are Z?

(c)

Which of the following alkenes are E and which are Z?

(b)

Name the following alkenes, being sure to specify whether they are cis or trans.

(a)

Name the following alkenes, being sure to specify whether they are cis or trans.

(c)