5.1 Functional Group

5.1 Functional Group

• We will start at the end of the functional group and work our way back to the first part of the name.
• The position of the functional group affects which parent chain you choose.

• When a molecule is connected to a compound, we call it an alcohol.

• Alcohols have the same functional group, the - OH group.
• One chapter on alcohols is in one of the functional groups in most textbooks.
• As you progress through the course, you add to your list of functional group names.
• You will learn at least six common functional groups throughout the course.

• The H Halogens are not usually named in the compound.
• They are named as substituents, which we will see later on.

• The alcohol and carboxylic acid are placed next to each other.
• carboxylic acids are very different from alcohols.

• One will be a part of the name and the other will be a part of the substituent part.
• The hierarchy needs to be followed.
• A carboxylic acid takes precedence over an alcohol when it comes to the six groups shown above.
• A compound with both of these groups is named as a ketone and we put the term "hydroxy" in the substituent part of the name to indicate the presence of the OH group.

• There are two functional groups in this compound, so we have to decide between calling it an amine or an alcohol.
• An alcohol outranks an amine if we look at the hierarchy above.
• The compound is named using the suffix -ol.

• The following compounds are named after what you would use as a suffix.