7. Suggest chemical structures for compounds A, B, and C, and answer the subsequent spectroscopy question Et 1. NaH Na,Cr207 LIAIHA (2 equiv) A в H2SO4, H20 Ét then H2O/N2OH 2. CH3Í (2 equiv) (a) Provide structures for compounds A, B, and C. [Hint: Compound C has the formula C10H1402, M* = 166 ] (b) Compound C has the following 'H NMR chemical shifts: 8 3.36 (s, 6H), 4.43 (s, 4H), 7.31 (s, 4H). Label the chemically-inequivalent protons as HA, HB, Hc, etc. and clearly assign the chemical shifts. (c) Compound C has the following13C NMR chemical shifts: 8 58, 75, 128, 138. Label the chemically-inequivalent carbons as C1, C2, C3, and C4 and assign the chemical shifts
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Infrared (IR) or vibrational spectroscopy is a method used for analyzing the particle's vibratory transformations. This is one of the very popular spectroscopic approaches employed by inorganic as well as organic laboratories because it is helpful in evaluating and distinguishing the frameworks of the molecules. The infra-red spectroscopy process or procedure is carried out using a tool called an infrared spectrometer to obtain an infrared spectral (or spectrophotometer).
![7. Suggest chemical structures for compounds A, B,
and C, and answer the subsequent spectroscopy
question
Et
1. NaH
Na,Cr207
LIAIHA
(2 equiv)
A
в
H2SO4, H20
Ét
then
H2O/N2OH
2. CH3I
(2 equiv)
(a) Provide structures for compounds A, B, and C.
[Hint: Compound C has the formula C10H1402, M* = 166 ]
(b) Compound C has the following 'H NMR chemical shifts:
8 3.36 (s, 6H), 4.43 (s, 4H), 7.31 (s, 4H).
Label the chemically-inequivalent protons as HA, HB, Hc, etc.
and clearly assign the chemical shifts.
(c) Compound C has the following13C NMR chemical shifts:
8 58, 75, 128, 138.
Label the chemically-inequivalent carbons as C1, C2, C3, and
C4 and assign the chemical shifts
(d) How could you use IR spectroscopy to confirm that
compound B has reacted to form compound C?
(e) Sketch the isotopic cluster for the mass spectrum of C.
(e.g., What would the mass spectrum look like?)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F7038cbde-5259-4f1b-ade8-fa8f6320a6eb%2F49ccd3eb-b623-4503-8b2b-ab5221227c95%2Ff4dnh4_processed.png&w=3840&q=75)
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