Indian Forest Service (Mains), Chemistry optional · 2023 · Paper II

Q3(e). Self-condensation of diethyl succinate

10 marks
Topic: Chemistry and mechanism of reactions
Question only

Question

Complete the reaction of two equivalents of diethyl succinate with ethoxide and explain the mechanism.

Model answer

The free solution for 2023 answers questions 1, 2, 5, 6 and 7, the ones picked in its time plan. This part is not answered on the site yet. New answers are announced on Telegram.

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Topic notes: carbonyl additions and condensations, with every Civil Services, IFoS and Geo-Scientist PYQ →

CoversClaisen condensationDieckmann cyclizationdiethyl succinatesuccinylsuccinatesodium ethoxide

All parts of Question 3

3(a) Hydrogen bromide addition to a conjugated diene5 marks
3(b)(i) Nitration of p-bromoanisole3 marks
3(b)(ii) Nitration of p-chloroanisole2 marks
3(c) Solvolysis and antiaromatic destabilization5 marks
3(d) Racemization during alpha bromination5 marks
3(e) Self-condensation of diethyl succinate10 marks
3(f) Six-pi electrocyclic switching10 marks