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  • Home / Ask Me Stuff
  • Free Lessons
    • Thermodynamics >
      • Thermochemistry Worksheet + Answers
      • First Law of Thermodynamics
      • Pressure-Volume Work
      • Enthalpy
      • Hess' Law
      • Enthalpy of Formation
      • Heat Capacity
      • Calorimetry
      • Entropy
      • Third Law of Thermodynamics
      • Spontaneity: Gibbs Free Energy
      • Second Law of Thermodynamics
      • Spontaneity at Different Temperatures
    • Electrochemistry >
      • Redox Reactions
      • Introduction to Half-Reactions
      • Calculating Oxidation Number
      • Has a Redox Reaction Occurred?
      • How to Balance Redox Reactions (Acidic Solution)
      • How to Balance Redox Reactions (Basic Solution)
      • Galvanic Cells
      • Standard Reduction Potentials
      • Electrolytic Cells
      • Nernst Equation
    • Kinetics >
      • Introduction
      • Relative Rates of Reaction
      • Rate Laws
      • Zero-Order Reactions
      • First-Order Reactions
      • Second-Order Reactions
      • Half-Life Expressions
      • Arrhenius Equation
      • How Long will it Take to Decay?
      • What Order is this Reaction?
      • Find the Rate Constant
    • Gases >
      • Pressure, Volume, Temperature
      • Ideal Gas Law
      • Density of Gases
      • Ideal Gas Law and Changes in P, V, T
      • Kinetic Molecular Theory
      • van der Waals' Equation for Non-Ideal Gases
      • Partial Pressures
      • Kinetic Energy and Temperature
    • Equilibrium >
      • Writing Equilibrium Expressions
      • Le Chatelier's Principle
    • Acids and Bases >
      • Acids and Bases Worksheet + Answers
      • Arrhenius vs Bronsted-Lowry vs Lewis Acids
      • Solve Titration Questions
    • Intermolecular Forces >
      • Phase Diagrams
      • Phase Changes
      • Intermolecular Forces
      • Effects of Intermolecular Forces
      • Ranking by Boiling/Melting Point
      • Clausius-Clapeyron Equation
      • Heating Curves
    • Solids >
      • Ionic/Metallic/Covalent
      • Symmetry of Solids
      • Simple Cubic, fcc and bcc
      • How to Find Edge Length
    • Organic Reactions >
      • Br2 + Alkene (Adding across a double bond)
      • HCl + Alkene (Adding across a double bond)
      • Reaction of OH with Alkyl Halide
      • What is Regioselectivity?
    • Moles and Mass >
      • Average Atomic Mass
      • Solve for Isotopic Abundance
      • Limiting Reagents
      • Percent Yield
      • Actual Yield and Percentage Yield
      • Percent Composition
    • Atomic Structure >
      • What's in an Atom?
      • Quantum Numbers
      • Pauli, Aufbau, Hund
      • Light: E h ν λ
      • Energy Levels of Hydrogen
      • Energy Levels of Non-Hydrogen Atoms
    • Organic Naming >
      • Naming Organic Molecules
      • How to Name Amines
      • How to Name Amides
    • Lewis Structures
  • Privacy Policy
  • Free Help on Discord

How to Name Amides


  1. Make sure you have an amide, and not an amine (an amide has a C=O attached right beside the N)
  2. Find the carbon chain that is attached to C=O.  It doesn't matter which carbon chain is longest for amides.
  3. Create the root of your molecule name: The amide on the right has two carbons on the side with the C=O, so the root is "ethanamide"
  4. Add substituents as required.  If there are carbon chains on N, you'll use "N" as the number.  In the molecule on the right, there is a two-carbon chain attached to N, so we'd add N-ethyl to the front of the molecule name.
Picture
Amide
C=O beside the N
Picture
Amine
No C=O beside the N

Examples


The carbon chain with the C=O is five carbons long, so the root of this molecule name is "pentanamide".

Then, we have an F atom (fluoro group) attached to the N, and an benzene ring (phenyl group) attached to the N as well.

The molecule is N-fluoro-N-phenylpentanamide
Picture

The carbon chain with C=O is five carbons long, so the root of the name is "pentanamide".

Then, we have:
  • three 1-carbon chains (methyl groups) attached to Carbon #2, #3 and #4
  • An F atom (fluoro group) attached to the N
  • A 7-carbon chain (heptyl group) attached to the N

N-fluoro-N-heptyl-2,3,4-trimethylpentanamide
Picture

The carbon chain with C=O is four carbons long, and it has a double bond starting with carbon 2 on the chain.  The root of the molecule name is but-2-enamide (Notice the "ene" for the double bond)

There are two Cl atoms (chloro groups) on the N  This molecule is 
N,N-dichlorobut-2-enamide.

Also note, if you know about cis/trans or E/Z, then the real name for this molecule is
trans-N,N-dichlorobut-2-enamide or
(E)-N,N-dichlorobut-2-enamide.
Picture
Created by Nathan Oldridge (aka ChemistNATE).  All lessons here are Public Domain.