Chemistry 9701 · AS & A Level · Organic synthesis

Organic synthesis — practice question

Methyl red may be synthesised as shown in Fig. 7.1.
(a(i))[1]

Give the systematic name of compound P.

(a(ii))[1]

Suggest suitable reagents and conditions for this reaction.

(a(iii))[1]

Explain why T forms as the major product in this reaction.

(b(i))[3]

Draw the structures of Q, R and S in the boxes in Fig. 7.1.

(b(ii))[3]

Suggest the reagents and conditions for steps 1 and 2 in Fig. 7.1.

Worked solution & mark scheme

This 9-mark question has a full step-by-step worked solution and mark scheme. One marking point: Correct name is 2-nitrobenzoic acid.

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