UPSC Combined Geo-Scientist, Mains · 2019 · Mains Paper III

Q9(c). E2 of menthyl and neomenthyl chlorides

5 marks
Topic: Outside the listed units
Question only

Question

Comment upon the base-catalyzed elimination reaction of menthyl chloride and neomenthyl chloride, emphasizing stereoselectivity and stereospecificity.

Model answer

The free solution for 2019 answers questions 1, 3, 4, 6, 7 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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Coversmenthyl chlorideneomenthyl chlorideanti-periplanar E2Hofmann vs Saytzeff

All parts of Question 9

9(a) Product A of an aldehyde condensation with mechanism10 marks
9(b) Birch reduction–alkylation sequence of a methoxybenzoic acid10 marks
9(c) E2 of menthyl and neomenthyl chlorides5 marks
9(d) Thermal or photochemical? Woodward–Hoffmann prediction5 marks