ABC26OR0963 · Organic Spectroscopy

Subject: Organic Chemistry · Chapter: Organic Spectroscopy · Topic: NMR 1H · Exam: NET DEC 2013 · Marks: 2 · Difficulty: Medium

Methyl 4-oxopentanoate exhibited signals at $\delta$ 208, 172, 51, 37, 32 and 27 ppm in its ${ }^{13} \mathrm{C}$ NMR spectrum. The signals due to the methoxy, $\mathrm{C}_{1}, \mathrm{C}_{4}$ and $\mathrm{C}_{5}$ carbons are
(a)OMe -32; $\mathrm{C}_{1}-208; \mathrm{C}_{4}-172; \mathrm{C}_{5}-51$
(b)OMe-51; $\mathrm{C}_{1}-208; \mathrm{C}_{4}-172; \mathrm{C}_{5}-32$
(c)OMe-32; $\mathrm{C}_{1}-172; \mathrm{C}_{4}-208; \mathrm{C}_{5}-51$
(d)OMe-51; $\mathrm{C}_{1}-172, \mathrm{C}_{4}-208; \mathrm{C}_{5}-32$
Answer
Answer (as printed): D
Explanation
No explanation was printed for this question.

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