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The 1H NMR of trans-1-bromo-3-methoxypropene shows the following chemical shifts for hydrogens Ha, Hb, Hc and Hd. The coupling constants for these hydrogen atoms are Jab = 14 Hz, Jac = 1.75 Hz and Jbc = 5.8 Hz.4
(b) In the box provided, Sketch the spin-spin coupling pattern that would be observed for the hydrogen Hb. Clearly show the coupling constants on your diagram.
On the answer sheet give the following information:
(a) In the box provided, identify which hydrogen, Ha, Hb, Hc or Hd, is responsible for each of the above absorptions.(b) In the box provided, Sketch the spin-spin coupling pattern that would be observed for the hydrogen Hb. Clearly show the coupling constants on your diagram.