For a compound with the molecular formula of C4H9Br, draw the structure of three possible isomers and predict the multiplicity of the non-equivalent protons in the 'H NMR spectrum of each isomer. A compound with molecular formula CsH1002 has the following 'H NMR spectrum: Proton NMR 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 ppm

For a compound with the molecular formula of C4H9Br, draw the structure of three possible isomers and predict the multiplicity of the non-equivalent protons in the 'H NMR spectrum of each isomer. A compound with molecular formula CsH1002 has the following 'H NMR spectrum: Proton NMR 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 ppm

Organic Chemistry

9th Edition

ISBN:9781305080485

Author:John E. McMurry

Publisher:John E. McMurry

Chapter13: Structure Determination: Nuclear Magnetic Resonance Spectroscopy

Section13.8: More Complex Spin–spin Splitting Patterns

Problem 15P: 3-Bromo-1-phenyl-1-propene shows a complex NMR spectrum in which the vinylic proton at C2 is coupled...

See similar textbooks

Similar questions

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.
ORGANIC CHEMISTRY: SEE PICTURE A compound with the chemical formula C5H10O gives the H NMR spectra below. Determine the HDI and then propose a structure of the unknown. Annotate the spectra with all relevant signals identified to support your answer. Hint: both peaks below could be classified as a singlet.
The molecular formula of an unknown compound is C7H13BrO2, The strong peak at 1750 cm^-1 The proton NMR data is, 1.2d(6H, d), 4.2d(1H, t), 2.2d(2H, quintet), 4.93d(1H, septet),1.08d(3H,t).What is the name of the unknown compound? Isopropyl 2-bromobutanoate 1-bromopropyl isobutyrate ethyl 2-bromo-3-methylbutanoate 1-bromoethyl 3-methylbutanoate
Consider the 13C NMR spectrum below. The spectrum belongs to which one of the following constitutional isomers of the compound C9H12? Select the single best answer.
Draw the 1H NMR spectra you would expect for the following compounds. Note that you must label the peaks at the proper range of chemical shift, with proper integral labeled below the peak, and proper spin-spin splitting (multiplicity
Propose structures that are consistent with the following spectra. (Integral ratios are given from left to right across the spectrum.) a. The 1H NMR spectrum of a compound with molecular formula C4H10O2 has two singlets with integral ratios of 2 : 3. b. The 1H NMR spectrum of a compound with molecular formula C6H10O2 has two singlets with integral ratios of 2 : 3. c. The 1H NMR spectrum of a compound with molecular formula C8H6O2 has two singlets with integral ratios of 1 : 2.
Predict the 1H NMR spectrum for the compound below and sketch it. Include splitting, and label the protons and their corresponding peaks.
The 13C NMR spectrum of fluoroethanoic acid shows a multiplet centred at δ = 79. When the same spectrum is recorded using proton decoupling, the multiplet collapses to a doublet with a splitting of 160 Hz. Another multiplet, but with much smaller splittings, is also seen centred at δ =179; this multiplet collapses to a doublet when decoupling is used. Explain these observations.
Explain why 2-chloropropene shows signals for three kinds of protons in its 1H NMRspectrum? Draw the structure and predict the approximate values for 1H-NMR spectra.
The 13C NMR spectrum of ethanoic acid (acetic acid) shows a quartet centred at δ = 21 with a splitting of 130 Hz. When the same spectrum is recorded using proton decoupling, the multiplet collapses to a single line. Another quartet, but with a much smaller spacing, is also seen centred at δ =178; this quartet collapses when decoupling is used. Explain these observations.
Draw the 1H NMR spectrum of the following compounds:-Show all chemical shifts and H assignments.-Show splitting patterns and coupling.-Show integrations.
300 MHz 1H NMR spectra in CDCl3 are shown below for five of the six isomers of dimethylphenol. Match each spectrum to the appropriate compound and assign the resonances of the spectrum to the appropriate protons in the compound.