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CAIE A-Level Chemistry Organic Structure and Mechanism Conventions

Practise CAIE A-Level Chemistry organic drawing conventions through unambiguous three-dimensional structures, optical isomers and wedge-dash notation.

Syllabus
2028–2030
Course
Chemistry 9701
Level
AS

Exam points

  • draw optical isomer pairs with wedge-dash bonds and correct three-dimensional arrangement

Covered syllabus points

Reference—Structural, displayed and skeletal formula conventionsReference—Organic reaction mechanism conventions

Organic structure and mechanism conventions question 1

[Maximum number: 3]

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

X, Y and Z are all isomers of (CH3)3CCHO\left(\mathrm{CH}_{3}\right)_{3} \mathrm{CCHO}.

A summary of some of the reactions and properties of X, Y and Z is shown in the table.

Table for Question Organic structure and mechanism conventions question 1 — CAIE A-Level Chemistry AS

Draw the skeletal formula of Z.

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