1- FROM structure above Which kinds of transition could you expect from the given compounds? 2-Calculate the Amax of the given compounds with the help of Woodward's Fiesher rule. 3-Explain any other method in detail which you will adopt for the chemical characterization of the given compound (IR, NMR or MASS)

1- FROM structure above Which kinds of transition could you expect from the given compounds? 2-Calculate the Amax of the given compounds with the help of Woodward's Fiesher rule. 3-Explain any other method in detail which you will adopt for the chemical characterization of the given compound (IR, NMR or MASS)

Organic Chemistry

9th Edition

ISBN:9781305080485

Author:John E. McMurry

Publisher:John E. McMurry

Chapter12: Structure Determination: Mass Spectrometry And Infrared Spectroscopy

Section12.SE: Something Extra

Problem 50AP

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Part A: Cover following points ;7-methyl-3-methylideneocta-1,6-diene Which kinds of transition could you expect from the given compounds? Calculate the λmax of the given compounds with the help of Woodward’s Fiesher rule. Explain any other method in detail which you will adopt for the chemical characterization of the given compound (IR, NMR or MASS)
Provide a detailed analysis of IR, Mass, 1H NMR and 13C NMR data for the following compound.
Dr. Danahy has never forgotten nor forgiven the molecule below from her undergraduate research. The extensive hydrogen bonding within the molecule (intramolecular) caused it to appear as two different compounds in the 1H NMR spectrum (no need to worry about why), even though it was only one compound! The true structure was revealed when she followed a colleague’s suggestion: to dissolve the compound in methanol rather than chloroform. In terms of hydrogen bonding, how might the compound behave in methanol versus chloroform?
a) Interpreted the analytical data reported, you should include reference to the IR, and NMR chemical shifts, integration and observed splitting patterns?b) Identify the compound which corresponds to the unknown, and provide a reason?c) Provide reasons why the other 8 structures do not fit with the reportedanalytical data?
The 1HNMR signals the alkene protons of three ethylene derivatives with different substitution patterns are shown below. Considering that each of the derivatives contains AT MOST two substituents (X and/or Y) and at least two protons. A) Propose the possible substitution patterns for each of the derivatives based on the observed splitting patterns. Justify your proposals B) How might one differentiate between the three possible isomers of derivative 3 in the question above using 1H NMR spectroscopy? Explain in a sentence – no calculation is needed. C) Give TWO methods that can be used to differentiate between the three possible isomers of derivative 2 in the question above using 1H NMR spectroscopy? Explain in a sentence – no calculation is needed.
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2) Figures 2 to 4 show the IR, 1H NMR and 13C NMR spectra of a compound with formula C3H5N 2a) Identify bands A and B in the IR spectrum 2b) Using the information from the 1H NMR spectrum, fill in the table below Peak cluster (ppm) Multiplicity Number of H in neighbouring C Proposed identification 0 1.30 2.35 2c) Propose a structure for the compound C3H5N. Justify your answer by referring to key spectral features of the 3 spectra.
Calculate the IHD and explain (elucidate) the structure using the 1H and 13C NMR data.
2 The IR and 1H-NMR spectra of a compound with molecular formula C4H7ClO2 are shown below. Your objective as a group is to propose a structure for this compound, explaining how you reach your decision. Using all the information you have been given, in a post with others in your group share your initial ideas about the possible structure of the compound. Then use comments to interact with the other students in the group and propose a final answer to the problem. In the comment phase, you should comment on the postings of at least two other students.
The cyclobutenyl dichloride below reacts with the powerful Lewis acid antimony pentafluoride in liquid SO2 at -75o to give a pale yellow solution that exhibits one singlet at 3.68 ppm in its 1H-NMR spectrum. The species in solution has been deduced to be the salt C8H12X2 where X is an hexahaloantimonate anion. Draw the cation part of the salt C8H12X2
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