3. The spin-decoupled 1°C NMR spectrum of an unknown compound contains a peak near 8 210 ppm, and a 'H NMR signal near & 9.5 ppm. Which of the following compounds could be this unknown? А. (CH):ССНО В. СН:CH-CH,CH-ОН C. CH;CH2OCH Ph D. CHCH-CH-СООН E. PHCH2C(O)CH;

3. The spin-decoupled 1°C NMR spectrum of an unknown compound contains a peak near 8 210 ppm, and a 'H NMR signal near & 9.5 ppm. Which of the following compounds could be this unknown? А. (CH):ССНО В. СН:CH-CH,CH-ОН C. CH;CH2OCH Ph D. CHCH-CH-СООН E. PHCH2C(O)CH;

Organic Chemistry

9th Edition

ISBN:9781305080485

Author:John E. McMurry

Publisher:John E. McMurry

Chapter13: Structure Determination: Nuclear Magnetic Resonance Spectroscopy

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Problem 56GP: Long-range coupling between protons more than two carbon atoms apart is sometimes observed when ...

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Mass Spectrometry

This process is an instrumental method in which a sample is changed to fast moving positive ions by electron bombardment. The charged particles vary due to their different mass to charge ratio and are estimated with the help of this difference. It is also called mass spectroscopy.

Question

3. The spin-decoupled 1C NMR spectrum of an unknown compound contains a peak near 8 210 ppm,
and a 'H NMR signal near & 9.5 ppm. Which of the following compounds could be this unknown?
А. (CH):ССНО
В. СН:CH-CH,CH-ОН
С. CНCH-0CH-Ph
D. CHCH-CH-СООН
E. PHCH2C(O)CH3

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