CH310N_Spring09_HW02-1

CH310N_Spring09_HW02-1 - Sessler CH310N Homework Problem...

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Unformatted text preview: Sessler CH310N Homework Problem Set 2 Due Thursday February 5th 1 K E Y Please write the first three letters of your last name in the above boxes Name:_______________________________ UT EID:_____________________________ Signature:____________________________ Score:______________ 1. Indicate whether the circled hydrogens in the following compounds are homotopic, enantiotopic, or diastereotopic. Write the answer in the boxes below each structure. (3 points) CH 3 CH 3 H H CH 3 CH 2 Br H H 2. Calculate the index of hydrogen deficiency of these compounds. (6 points) a. Aspirin, C 9 H 8 O 4 b. Ascorbic acid (Vitamin C), C 6 H 8 O 6 c. Pyridine, C 5 H 5 N d. Urea, CH 4 N 2 O e. Cholesterol, C 27 H 46 O f. Dopamine, C 8 H 11 NO 2 Diastereotopic Enantiotopic Enantiotopic (20-8)/2=6 (14-8)/2=3 (13-5)/2=4 nitrogen correction (6-4)/2=1 nitrogen correction (56-46)/2=5 (19-11)/2=4 nitrogen correction Sessler CH310N Homework Problem Set 2 Due Thursday February 5th 2 3. Indicate the number of different proton groups (the number of signals in the NMR spectrum) in the 3....
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CH310N_Spring09_HW02-1 - Sessler CH310N Homework Problem...

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