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CAIE A-Level Chemistry 17.1.1 Preparation of Aldehydes and Ketones

Practise oxidising primary and secondary alcohols to carbonyl compounds while controlling apparatus and conditions.

Syllabus
2028–2030
Course
Chemistry 9701
Level
AS

Exam points

  • oxidise a primary alcohol with acidified dichromate or manganate(VII) and distil the aldehyde as it forms
  • oxidise a secondary alcohol under the same reagent conditions to form a ketone
  • avoid refluxing a primary alcohol with excess oxidant when the required product is an aldehyde rather than an acid

17.1.1—Preparation of aldehydes and ketones question 1

[Maximum number: 1]

4(CH3)3CCHO4\left(\mathrm{CH}_{3}\right)_{3} \mathrm{CCHO} is used in the synthesis of some antibiotics.

Two reaction sequences are shown.

Figure for Question 17.1.1—Preparation of aldehydes and ketones question 1 — CAIE A-Level Chemistry AS
Figure for Question 17.1.1—Preparation of aldehydes and ketones question 1 — CAIE A-Level Chemistry AS

Reaction 1 is an oxidation reaction.

Identify the reagent(s) and conditions for reaction 1.

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