UPSC Combined Geo-Scientist, Mains · 2020 · Mains Paper III
Q9(b). Heating an anion X
Question
What happens when the anion X is subjected to heating? Complete the reaction with mechanism. [anion given in the paper]
Model answer
The free solution for 2020 answers questions 1, 2, 4, 6, 8 and 10, 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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Coverspericyclic reactionanionic rearrangementelectrocyclic ring closure
All parts of Question 9
- 9(a) Photochemical reaction of a ketone in methanol10 marks
- 9(b) Heating an anion X5 marks
- 9(c) Identify P, Q and R in a thermal sequence at 180 °C5 marks
- 9(d) Stereoselective NaBH₄ reduction10 marks