It is a sequence of reactions where heptane is oxidised to methyl benzene, further oxidised to benzaldehyde, and finally cannizzaro reaction occurs to give the desired product.
JEE Main 2023 — Chemistry Organic Chemistry
2023mcqmedium
The correct sequence of reagents for the preparation of Q and R is:
Official previous-year question
Held on 25 Jan 2023 · Verified 6 Jul 2026.
Options
- A
(i) Cr2O3,770K,20atm; (ii) CrO2Cl2,H3O+; (iii) NaOH; (iv) H3O+
- B
(i) CrO2Cl2,H3O+; (ii) Cr2O3,770K,20atm; (iii) NaOH; (iv) H3O+
- C
(i) KMnO4,OH−; (ii) Mo2O3,Δ; (iii) NaOH; (iv) H3O+
- D
(i) Mo2O3,Δ; (ii) CrO2Cl2,H3O+; (iii) NaOH; (iv) H3O+
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