Neco 2024 Chemistry Question 23

Practice objective / multiple choice question 23 from the 2024 Neco Chemistry examination.

Neco 2024 Chemistry Objective / Multiple Choice Medium Difficulty
Question 23 NECO • 2024 • CHEMISTRY • objective

2‑Methyl‑1‑butene (\\(CH_2=CH‑CH(CH_3)‑CH_3\\)) is first treated with ozone (\\(O_3\\)) at \-78 °C followed by reductive work‑up with zinc and water. The resulting carbonyl compounds are then oxidised with pyridinium chlorochromate (PCC) and finally esterified with methanol in the presence of catalytic sulfuric acid. Identify the final organic product obtained.

Answer Options

A. Methyl 3‑methyl‑butanoate (methyl isovalerate)
B. Methyl 2‑methyl‑butanoate (methyl isopentanoate)
C. Methyl 2‑ethyl‑propanoate (methyl ethylacetate)
Correct Answer D. Methyl 2‑methyl‑propanoate (methyl isobutyrate)
Correct Answer
D
Correct Option:
Methyl 2‑methyl‑propanoate (methyl isobutyrate)

About This Question

This is Neco 2024 Chemistry Question 23. It is one of the objective questions from the 2024 Neco Chemistry examination.

Difficulty level: Medium .

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