Naming

Question 1

Branched Alkyl group with 3 carbon atoms

Answer 1

Isopropyl (1-methylethyl)

Question 2

Name the branched Alkyl groups with 4 carbon atoms

Answer 2

sec-Butyl

Isobutyl

tert-Butyl

Question 3

Name the branched Alkyl groups with 5 Carbon Atoms

Answer 3

Isopentyl or isoamyl

Neopentyl

Question 4

How do you name complex substituents?

Answer 4

1) Place numbers on substituent going away from parent chain
2) Numbers go on longest chain in substituent
3) Name substituent groups coming off substituent

Question 5

What is Step 1 of naming an Alkane?

Answer 5

Identify parent chain

For chains of equal length, choose the chain with more substituents

Question 6

What is Step 2 of naming an Alkane?

Answer 6

Identify and name substituents

Question 7

What is Step 3 of naming an Alkane?

Answer 7

Number the parent chain and assign a number to each substituent

Give 1st substituent lowest #. If a tie, give 2nd substituent lowest #.

Question 8

What is Step 4 of naming an Alkane?

Answer 8

Arrange the substituents alphabetically.

Place #’s in front of each substituent. For identical substituents, use di, tri or tetra which are ignored when alphabetizing.

Question 9

How do you name Bicyclic compounds?

Answer 9

Count carbon atoms for each path connecting two bridgeheads, excluding the bridgeheads themselves.

These three numbers, ordered from largest to smallest, [eg. 2.2.1], are then placed in the middle of the parent surrounded by brackets

Question 10

How do you name a substituent on a Bicyclic compound?

Answer 10

Number the parent:

• start at one of the bridgeheads
• begin numbering along the longest path
• then go to the second longest path
• finally go along the shortest path
• substituent gets lowest number after using numbering system

Consider 6-methylbicyclo[3.2.1]octane