Practice problems for Exam 1

Practice problems for Exam 1 - Practice problems for Exam 1...

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Practice problems for Exam 1 1. Do all homework and quiz problems related to Chapters 12-15. 2. Describe the characteristic IR absorption frequencies that would allow you to distinguish between the following pairs of compounds. Give your reasoning. O O and iv) H 3 CC C CO 2 Me MeO 2 C CO 2 Me and i) ii) iii) NH 2 O and H O and v) H 3 CH 2 C H CH 3 H 3 C H 3 C H 3 C CH 3 O O and 3. Which of the following structures has a lower characteristic stretching frequency of the C=O bond? Explain briefly.
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4.Which of the following structures is consistent with the IR spectra shown below? 5. Predict the number of peaks in 1 H and 13 C NMR spectra for each of the following compounds. O CH 3 CO 2 H H 3 CC CH 3 CH 3 O C O O N C CN Ph O CH 3 1 H NMR 13 C NMR
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6. The five compounds shown below have different 13-C NMR spectra. Match the structures with the correct spectra by placing the letter of the specific compound in the box. CH 3 CH 3 H 3 C OH OH O O A B C D O O E
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7. Sketch your prediction of the proton and carbon NMR spectra of the following two compounds. Provide the multiplicity for each proton, and assign all of the peaks to the protons and carbons.
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This note was uploaded on 03/03/2010 for the course CHEM 239 taught by Professor Chong during the Spring '10 term at Illinois Tech.

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Practice problems for Exam 1 - Practice problems for Exam 1...

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