Naming Benzene Ring Derivatives - Aromatic Compounds

Summary

This video tutorial provides a comprehensive guide to naming benzene derivatives, focusing on mono-, di-, and tri-substituted compounds. The presenter explains how to identify and name various functional groups attached to a benzene ring, such as nitro, hydroxyl, carboxylic acid, and alkyl groups, while highlighting common names and systematic nomenclature. The video also emphasizes the importance of positioning substituents for disubstituted and trisubstituted benzene derivatives, detailing the rules for numbering and alphabetical ordering. This informative session equips viewers with essential knowledge for understanding organic chemistry and effectively naming aromatic compounds.

Takeaways

• 😀 Benzene derivatives can be named based on the substituents attached to the benzene ring.
• 🔍 A benzene ring with an -NO2 group is called nitrobenzene.
• 📜 The -OH group attached to a benzene ring is referred to as phenol.
• 🌿 An ether group (-OCH3) on a benzene ring is called anisole.
• 🧪 An amine group (-NH2) results in aniline when attached to a benzene ring.
• 🍂 A benzene ring with a carboxylic acid group (-COOH) is named benzoic acid.
• 🏭 Benzaldehyde is the name for a benzene ring with an aldehyde group (-CHO).
• 💡 Styrene refers to a benzene ring with a carbon-carbon double bond.
• 🔬 When a ketone is attached to a benzene ring, it's called acetophenone.
• 💧 Halogen substituents on a benzene ring are named based on the halogen, e.g., chlorobenzene or bromobenzene.

Q & A

What is the name of the molecule with a benzene ring and an NO₂ group?

The molecule is called Nitrobenzene.

How is the molecule with a benzene ring and an OH group commonly referred to?

It is commonly referred to as Phenol.

What is the parent name for a benzene ring with an OCH₃ group?

The parent name for this molecule is Anisole.

What do you call a benzene ring with a carboxylic acid (COOH) attached?

This compound is known as Benzoic acid.

How would you name a benzene ring with an aldehyde functional group?

This compound is called Benzaldehyde.

What are the common names for a benzene ring with a carbon-carbon double bond?

It is commonly called Styrene or Vinylbenzene.

What is the name of a benzene ring with a ketone group next to it?

The molecule is named Acetophenone.

How are chlorobenzene and bromobenzene named based on their halogen substituents?

The molecule with a chlorine atom attached to the benzene ring is called Chloro benzene, while the one with a bromine atom is called Bromobenzene.

What is the common name for a benzene ring with a methyl group?

The common name for this molecule is Toluene.

How do you differentiate between ortho, meta, and para isomers in disubstituted benzene derivatives?

Ortho refers to substituents at the 1,2 positions, meta refers to 1,3 positions, and para refers to 1,4 positions on the benzene ring.