IUPAC Naming Masterclass

Introduction

• Task: Cover entire IUPAC naming in one video.
• Topics: Naming branch chains, complex chains, multiple bonds, functional groups, polyfunctional groups, cyclic compounds, aromatic compounds.
• Duration: 1-1.5 hours.

Basic Rules of IUPAC Naming

Carbon Chain Basics

• 4 carbons: but
• Single bonds in carbon chain: use ane
  • Double bond: use ene
  • Triple bond: use yne

Functional Groups

• OH (Alcohol): Main functional group, suffix -ol
• Cl (Chloro): Substituent, prefix -chloro

Naming Structure

• Prefix + Word Root + Suffix
• Example: 3-Chloro Butan-1-ol.
  • Substituent (chloro) + Number of Carbons (but) + Nature of Bond (ane) + Functional Group (ol).

Cyclic Compounds

• Cyclo- prefix for cyclic compounds.
• Example: Cyclohexanol

Naming Components

• Word Roots: Based on number of carbons (Meth-, Eth-, Prop-, But-, etc.)
• Primary Suffix: Based on type of bond (ane, ene, yne)
• Secondary Suffix: For functional groups (ol, oic acid, amide, etc.)

Complex Chains & Side Chains

• Longest chain rule for main chain.
• Numbering rules to follow lowest locant rule.
• Example: Use bis, tris, tetrakis for repeated side chains.

Polyfunctional Groups

• Use priority table.
• Primary group: Suffix
• Secondary groups: Prefix
• Order: Carboxylic acids, aldehydes, ketones, alcohols, amines, etc.

Aromatic Compounds

• Benzene: Cyclohex-1,3,5-triene
• Benzene derivatives: Toluene, Xylene, etc.
• Naming: Phenyl, benzyl, etc.

Summary

• Key focus on understanding the order of naming: Prefix + Word Root + Suffix.
• Practice more to get familiar with naming rules.

Note: This masterclass condenses what typically takes weeks into 1.5 hours. Practice is essential for mastery.