Using proton NMR spectra, how could a chemist distinguish between the following two compounds? H. H. СОСН Ph COCH; Ph H. Compound A Compound B The alkene protons in compound A display a larger coupling constant. Compound A and compound B show a different number of signals in the proton spectrum. The alpha alkene proton would be more shifted than the beta alkene proton in compound B Proton NMR spectroscopy cannot be used to distinguish between these compounds. The alkene protons in compound B display a larger coupling constant.
Using proton NMR spectra, how could a chemist distinguish between the following two compounds? H. H. СОСН Ph COCH; Ph H. Compound A Compound B The alkene protons in compound A display a larger coupling constant. Compound A and compound B show a different number of signals in the proton spectrum. The alpha alkene proton would be more shifted than the beta alkene proton in compound B Proton NMR spectroscopy cannot be used to distinguish between these compounds. The alkene protons in compound B display a larger coupling constant.
Chapter95: Nuclear Magnetic Resonance Spectroscopy (proton Nmr)
Section: Chapter Questions
Problem 9P
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Transcribed Image Text:Using proton NMR spectra, how could a chemist distinguish between the following
two compounds?
H.
H.
СОСН
Ph
COCH;
Ph
H.
Compound A
Compound B
The alkene protons in compound A display a larger coupling constant.
Compound A and compound B show a different number of signals in the proton spectrum.
The alpha alkene proton would be more shifted than the beta alkene proton in compound B
Proton NMR spectroscopy cannot be used to distinguish between these compounds.
The alkene protons in compound B display a larger coupling constant.
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