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alcohols aldehydes ketones

A LevelChemistry~4 min read

Overview

This lesson explores the structure, nomenclature, properties, and reactions of alcohols, aldehydes, and ketones. We will delve into the characteristic functional groups, their interconversions, and their importance in organic synthesis.

1. Alcohols: Structure, Nomenclature, and Classification

Alcohols are organic compounds characterized by the presence of a **hydroxyl (-OH) functional group** attached to a saturated carbon atom. Their general formula is R-OH. The presence of the electronegative oxygen atom makes the O-H bond polar, leading to hydrogen bonding between alcohol molecules, w...

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Key Concepts

  • Alcohol: Organic compounds containing a hydroxyl (-OH) functional group bonded to a saturated carbon atom.
  • Aldehyde: Organic compounds containing a carbonyl (C=O) functional group where the carbonyl carbon is bonded to at least one hydrogen atom and one alkyl/aryl group (or two hydrogen atoms in methanal).
  • Ketone: Organic compounds containing a carbonyl (C=O) functional group where the carbonyl carbon is bonded to two alkyl/aryl groups.
  • Carbonyl group: A functional group consisting of a carbon atom double-bonded to an oxygen atom (C=O).
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Exam Tips

  • Master the oxidation reactions of primary, secondary, and tertiary alcohols, including the specific reagents and conditions required for each product (aldehyde vs. carboxylic acid).
  • Understand the mechanism of nucleophilic addition to the carbonyl group, particularly for reduction and reaction with HCN, identifying the electrophilic and nucleophilic sites.
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