Propose plausible structures for the five compounds whose proton NMR spectra are shown: C_4H_10O_2; C_7H_7Br; C_4H_9Br;...
8) Propose plausible structures for the five compounds whose proton NMR spectra are shown: (a) C.H.Oz. (b) CH,Br; (c) C&H,Br; (d) CyHBr. 8) Propose plausible structures for the five compounds whose proton NMR spectra are shown: (a) C4H1002; (6) CyH,Br; (e) C&H Br; (d) CH,Br. pos 2.00 2012.00
Please help me understand how to obtain the structures of the compounds for the NMR spectra The NMR spectra are shown for two isomeric compounds with formula C_10H_12O_2. Their infrared spectra show strong bands near 1735cm^-1. Make no attempt to interpret the aromatic proton area between 7.0 and 7.5 ppm except to determine the number of protons attached to the aromatic ring. Draw the structures of the compounds.
2) Propose structures for the compounds that would be expected to generate the following 1H NMR spectra. Calculate the degree of unsaturation of each compound and assign the protons to their respective peaks.010 1H shift chart 304.pdf
Predict the proton nmr spectra for each of the following structures. Number of signals: Relative area: Splitting pattern (S,T,Q etc) 4 5 6
NMR. Consider the following compounds (A-E). Which of the compounds (A-E) corresponds to the proton and carbon-13 NMR spectra below? Circle the compound and write an explanation. PROBLEM 7. NMR. Consider the following compounds (A-E). Which of the compounds (A. corresponds to the proton and carbon-13 NMR spectra below? Circle the compound and write explanation to the box at the bottom of the page. Note: Just guessing without correct explanation does not count. in dhe i all 2H 2x3H 1H...
4) The 1H-NMR spectra shown below correspond to a compound of general formula CH,Br. Propose a plausible structure for this compound. a) Explain the multiplicity and the chemical shift of each signal b) Indicate in each signal how you would calculate the coupling constants (5). Give an approximate value (range) for each of the expected ) values c) Indicate the 'H coupling showing the above-indicated J values ? -3.31 2.01 1.00 6.03
PROBLEM 8. NMR. Design (=draw) proton spectra for the following compounds: A B Answer- no words necessary. Drawing-I understand it is going to be a very "approximate drawing. A 10art4 PPM В PPM
LALIIVI 1-11 Answer the question(s) for the compound whose 'H NMR spectra is shown below. C5H120 3H 1H T T 1 T T T 10 -LO 9 7 5 4. 3 z 1 0 IPN-00-106 ppm 7. Refer to Exhibit 13-11. Propose a structure for this compound. 8. Show how you might use a Robinson annulation reaction to synthesize the following compound. Draw the structures of both reactants and the structure of the intermediate Michael addition product. MeOC CH3
6. The 'H-NMR spectra shown below correspond to a compound of general forma C D 2H 1H 2H 2H2H TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT 10.0 9.5 9.5 8.5 8.6 7.5 7.0 PPM a) Propose a plausible structure for this compound (3 points) b) Assign each signal from the 1H-NMR spectra to the corresponding hydrogen atoms in compound. Explain for each signal the observed splitting pattern and the chemical sh
8. IR and proton NMR spectra for compound X are given below. Propose a structure for compound X based on these spectral data. Assign major IR peaks and proton signals. 100+ 90 801 ME92 33AM 45 73 70 604 504 401 57 301 201 101 20 40 200 0 80 180 00 120 140 160