How to Name a Compound with Multiple Functional Groups The list of functional group priorities can be found in this post: Let’s consider a few more examples demonstrating the priority of the amino group over other functional groups such as alkyls, halides, and multiple bonds. When other groups are present on the ring, it is numbered clockwise or counterclockwise depending on which direction gives the next substituent the lower number: This rule always puts the NH 2 group at C1, therefore, the “1” is usually omitted from the name: Notice that when the amine is connected to a ring, we start numbering from the carbon connected to the NH 2 group. The alkyl group is added to the suffix “ amine” forming a single word: In common names, we treat the carbon chain as an alkyl group bonded to the nitrogen atom.

Step 4. Put everything together having the substituents in alphabetical order.įor example, butan e changes to butan-1- amine, cyclohexan e to cyclohexan amine: Step 3. Number the parent chain giving the amine the lowest locant Step 1. Identify the longest carbon chain bonded to the amine nitrogen.

This is the brief summary of naming a primary amine:

Naming amines by the systematic nomenclature follows the same rules we discussed earlier for the IUPAC nomenclature rules for alkanes. In general, amines can be named either by systematic or common names. Replacing one hydrogen of ammonia with an alkyl group forms an amine with a general formula of R-NH 2:ĭepending on the number of alkyl groups are connected to the nitrogen, we have primary, secondary, and tertiary amines: Before going into the details of naming amines, let’s first recall what they are and how they are classified.Īmines are the derivatives of ammonia (remember NH 3 from General chemistry).

Amino acid iupac nomenclature