Naming Alcohols - IUPAC Nomenclature

TL;DR

Learn how to name alcohols using common names and IUPAC nomenclature, including examples with multiple substituents and alcohol groups on rings.

Transcript

in this lesson we're gonna focus on naming alcohols so let's start with some basic examples so what is the name of ch3oh the common name for this molecule is methyl alcohol it's also called methanol now what about this one ch3 ch2 Oh H the common name for this alcohol is ethyl alcohol it's also known as ethanol now what about these two examples was... Read More

Key Insights

• 📛 Alcohols can be named using common names or IUPAC nomenclature.
• 📛 Common names often reflect their structural characteristics, such as methyl alcohol and ethyl alcohol.
• 💨 IUPAC nomenclature provides a systematic way to name alcohols, considering the number and position of substituents.
• 🧘 Alcohols with multiple substituents can be named in alphabetical order, indicating the position of each substituent.
• 👥 Alcohol groups on rings are named by indicating the position of the alcohol group and any additional substituents.

Questions & Answers

Q: What is the common name for CH3CH2OH?

Ethyl alcohol, or ethanol, is the common name for CH3CH2OH.

Q: How is isopropyl alcohol named using IUPAC nomenclature?

Isopropyl alcohol can also be named as isopropanol. It has a three-carbon chain, with the OH group on carbon 2.

Q: How do you name an alcohol with two hydroxyl groups?

When there are two alcohol groups, the molecule is called a diol. For example, C3H8O2 is named as propane-1,2-diol.

Q: Which substituent takes priority in naming a molecule with an alcohol group and an alkyl halide?

The alcohol group has higher priority than the alkyl halide. The name is based on the alcohol group, indicating its position and the substituents present.

Summary & Key Takeaways

• Methyl alcohol, also known as methanol, is the common name for CH3OH.

• Ethyl alcohol, also called ethanol, is the common name for CH3CH2OH.

• Isopropyl alcohol has an isopropyl group attached to the OH group, while tert-butyl alcohol has a tert-butyl group.

• IUPAC nomenclature is used to name alcohols systematically, considering the number and position of substituents.