Question 1: (5 marks – 3 for 1H NMR and 2 for 13C NMR)) Please draw the 1H-NMR and 13C-NMR spectra for the molecule shown. Be sure to indicate the approximate chemical shifts for the expected signals. In the 1H-NMR please also be sure to indicate the correct coupling patterns and integrations. Please use the symbols 1H, 2H 3H, 4H above each signal to indicate the number of hydrogen atoms responsible for each signal. HO -0 8 7 - גט 6 5 4 Chemical Shift (ppm) 3 2 1 TT 200 180 160 140 120 100 80 60 40 40 Chemical Shift (ppm) OH 20 20 0

Question 1: (5 marks – 3 for 1H NMR and 2 for 13C NMR)) Please draw the 1H-NMR and 13C-NMR spectra for the molecule shown. Be sure to indicate the approximate chemical shifts for the expected signals. In the 1H-NMR please also be sure to indicate the correct coupling patterns and integrations. Please use the symbols 1H, 2H 3H, 4H above each signal to indicate the number of hydrogen atoms responsible for each signal. HO -0 8 7 - גט 6 5 4 Chemical Shift (ppm) 3 2 1 TT 200 180 160 140 120 100 80 60 40 40 Chemical Shift (ppm) OH 20 20 0

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

ChapterL4: Proton (1h) Nmr Spectroscopy

Section: Chapter Questions

Problem 11E

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3-Bromo-1-phenyl-1-propene shows a complex NMR spectrum in which the vinylic proton at C2 is coupled with both the C1 vinylic proton (J = 16 Hz) and the C3 methylene protons (J = 8 Hz). Draw a tree diagram for the C2 proton signal, and account for the fact that a five-line multiplet is observed.
Question 1: (5 marks - 3 for 1H NMR and 2 for 13C NMR)) Please draw the 1H-NMR and 13C-NMR spectra for the molecule shown. Be sure to indicate the approximate chemical shifts for the expected signals. In the 1H-NMR please also be sure to indicate the correct coupling patterns and integrations. Please use the symbols 1H, 2H 3H, 4H above each signal to indicate the number of hydrogen atoms responsible for each signal. HO 8 7 6 5 4 3 2 Chemical Shift (ppm) 200 180 160 140 120 100 80 60 40 10 Chemical Shift (ppm) 20 OH
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