Q17 · CSIR NET Chemistry, June 2013
Paper: CSIR NET June 2013 · Subject: Organic Chemistry · Chapter: Organic Spectroscopy · Topic: NMR 1H · Marks: 2 · Difficulty: Hard
An organic compound exhibited the following $^{1}\mathrm{H}$ NMR spectra data: $\delta: 7.80(2\mathrm{H}, \mathrm{d}, J=8\,\mathrm{Hz}), 6.80(2\mathrm{H}, \mathrm{d}, J=8\,\mathrm{Hz}), 4.10(2\mathrm{H}, \mathrm{q}, J=7.2\,\mathrm{Hz}), 2.4(3\mathrm{H}, \mathrm{s}), 1.25(3\mathrm{H}, \mathrm{t}, J=7.2\,\mathrm{Hz})$ The compound, among the choices given below is
(a)
(b)
(c)
(d)
Answer
Answer: A ✓ checked by 4AB · confidence high
The source book printed no answer; this one was worked out and checked — see the explanation.
Explanation
Two 2H doublets (para ring), an OCH₂CH₃ (4.10 q, 1.25 t), and a COCH₃ singlet at 2.4: 4-ethoxyacetophenone (a).
Study loop for Organic Spectroscopy