Indian Forest Service (Mains), Chemistry optional · 2022 · Paper II

Q6(e)(i). Photolysis of methyl cyclopropyl ketone

5 marks
Topic: Photochemistry
Question only

Question

Predict the photoproduct of methyl cyclopropyl ketone and provide a plausible mechanism.

Model answer

The free solution for 2022 answers questions 1, 3, 5, 7 and 8, 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: organic photochemistry and Norrish reactions, with every Civil Services, IFoS and Geo-Scientist PYQ →

Coversmethyl cyclopropyl ketone photolysiscyclopropane ring openingconjugated enoneNorrish type Iphotochemistry

All parts of Question 6

6(a) Epoxy resins10 marks
6(b) Polymer end-group analysis5 marks
6(c) Hydrogen bonds in protein secondary structure5 marks
6(d) Norrish-II hydrogen abstraction5 marks
6(e)(i) Photolysis of methyl cyclopropyl ketone5 marks
6(e)(ii) Three-carbon photochemical ring expansion10 marks