4. Look at the structure of the product (provided), 3 hydrogens are labelled (H₁, H₂ and H.). While H₂ may look simple on the ¹H NMR spectrum that you obtained (due to low resolution), it actually has a more complex splitting pattern. Create a tree diagram showing the splitting of H₁. Hint: H₁ is diastereotopic proton, assume JAB > Jac and assume no long range (>3 bond) coupling. AC Hb Ha I Hc

4. Look at the structure of the product (provided), 3 hydrogens are labelled (H₁, H₂ and H.). While H₂ may look simple on the ¹H NMR spectrum that you obtained (due to low resolution), it actually has a more complex splitting pattern. Create a tree diagram showing the splitting of H₁. Hint: H₁ is diastereotopic proton, assume JAB > Jac and assume no long range (>3 bond) coupling. AC Hb Ha I Hc

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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4. The chemical shifts of Ha and Hb in the ¹H nmr spectrum of the compound shown below are 0.88 and 3.44 ppm respectively. In comparison the methylene protons in cyclopentane resonate at approximately 1.5 ppm. Explain why Ha and Hb resonate at the given frequencies. H H3CH₂CO 5. Using the table provided predict the chemical shifts of the protons labeled a-b in Compound B below. Show your working. Ha Hb Ha Ph Hb HO dH = 5.25 + Zgem + Z cis + Ztrans H Substituent Zgem 0.44 0.98 0.5 1.35 1.00 1.04 1.00 0.23 1.18 1.03 2.09 Alkyl -C=C -C=C Phenyl CI Br COOH -C=N -OR -C(=O)H OC(=O)R Zcis Ztrans -0.29 -0.21 0.10 -0.10 -0.26 -0.04 0.35 0.37 0.19 0.03 0.40 0.55 1.35 0.74 0.78 0.58 -1.06 -1.28 0.97 1.21 -0.40 -0.67
What is the structure of the minor product with just the important J-values listed with protons labeled, along with a table that lists those protons chemical shift (d, ppm), integration, multiplicity, and J-values (Hz). Note – your aromatic signals will have to be listed as multiplets, and will need a chemical shift range.
Predict the structure of the compound using the information below. Kindly show what information are obtained for each spectra which may help in predicting the structure. From IR Spectra: See the attached picture From Mass Spectra M+ = 87 From Proton and Carbon NMR Spectra See attached picture.
The reaction of an unknown with ethanol in the presence of a small amount of H₂SO4 leads to a compound that smells distinctly like rum. The protondecoupled ¹³C NMR spectrum of the product is as shown in the figure (* =solvent). (Figure 1) Figure 200 180 160 140 120 100 80 60 40 1 of 1 20 ppm ▼ Part A What is the structure of the unknown ? Spell out the full name of the compound. Submit Request Answer Part B What other structure(s) would be consistent with this ¹3C NMR spectrum? Enter your answers separated by a comma.
What IR and H-NMR peaks would you expect to see in methyl 3-oxohexanoate (see p559, attached image)? Include band position, chemical shift, splitting in your response.
I need help with the problem below!
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please answer with structure and name of chemical compound!
HINT: Integration is just a ratio not the actual number of hydrogens. Q1: The following alcohol undergoes elimination in the presence of concentrated sulfuric acid, but the product shown is not its chief product. Instead, another isomeric six-carbon alkene forms. This product shows a large peak at 20.4 ppm and a smaller one at 123.4 ppm in its proton-decoupled 13C NMR spectrum. Draw the structure of the product and interpret the spectrum. Outline a mechanism for the formation of the product that possesses this spectrum. CH3 CH;-CH-CH-CH2-OH CH3 H,SO, CH;-CH-C=CH2 + H,0
1. Report your 1H NMR analyses here. Fill in the table. ( inserted below) 2. Draw structure and math the peaks with the protons. 3. Explain any special features: IR: conjugation, resonance, H-bonding, etc. 1HNMR: enantiotopic, diastereotopic, H-bonding, cis- trans, coupling constants, etc.
2. Spectra warm-up. For each of the following four compounds, please pair them with the appropriate IR and 13C NMR spectrum shown on the following pages. Then please draw what you might expect their 'H spectra to look like. Most spectra in this problem set were obtained from the Spectral Database for Organic Compounds. HO IR match: NMR match: A = 100 L00 B = 4000 00 C = J000 sio 100 80 60 %T D = 40 20 4000 3000 2000 1500 1000 400 R2020 93124TM Wavenumber (cm-']
2 of the 3 are incorrect, please help me understand why and what is correct. Please answer fast i give upvote.