4. Alkanes and Cycloalkanes

a. How many vinylic hydrogens does cyclopentene have?

b. How many allylic hydrogens does it have?

Draw and label the E and Z isomers for each of the following:

c.

How many of the following names are correct? Correct the incorrect names.

a. 3-pentene

b. 2-octene

c. 2-vinylpentane

How many of the following names are correct? Correct the incorrect names.

d. 1-ethyl-1-pentene

e. 5-ethylcyclohexene

f. 5-chloro-3-hexene

Which of the following names are correct? Correct those that are not correct.

c. 4-chloro-2-pentyne

d. 2,3-dimethyl-5-octyne

Draw a condensed structure for each of the following:

i. diethylacetylene

j. di-tert-butylacetylene

Draw a condensed structure for each of the following:

k. cyclopentylacetylene

l. 5,6-dimethyl-2-heptyne

Draw the structure for each of the following:

a. 3,3-dimethylcyclopentene

b. 6-bromo-2,3-dimethyl-2-hexene

Name the following:

b.

Write structural formulas for the following compounds (includes both old- and new-style names).

(d) cyclohexylacetylene

(e) 5-methyl-3-octyne

(f) trans-3,5-dibromocyclodecyne

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

Draw the molecular orbital picture of pent-1-en-3-yne.

Draw the skeletal structures for the compounds in Problem 42.

d. vinyl bromide

e. 1,2-dimethylcyclopentene

f. diallylamine

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

e. 4,4-dimethyl-1-pentyne

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

b. cyclooctyne