30B_Winter06_Exam1 - ORGANIC CHEMISTRY 30B(Prof Yves Rubin...

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ORGANIC CHEMISTRY 30B (Prof. Yves Rubin) UCLA, WINTER 2006 MIDTERM EXAM I On my honor, I have neither given nor received any aid on this exam ( Please, use ink only if you may ask for a regrade ): ____________________________ __________________________ Signature I. D. Number ____________________________ Full Name ( Please Print ! ) Question Points 1 (30) 2 (15) 3 (15) 4 (40) Total (100) =========
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Organic Chemistry 30B Winter 2006 EXAM 1, Page 1 __________________ Name I. THEORY 1. a) (12 points) Give the number of expected signals ( ignore splittings) in the 1 H and 13 C NMR spectra of the following compounds: CH 3 OH OH Cl O O O CH 3 1 H NMR: ___________ ___________ ___________ 13 C NMR: ___________ ___________ ___________ b) (18 points) Sketch the 1 H NMR spectrum for the compound below. Be sure to consider chemical shifts , coupling patterns , and rough relative intensities between each spin system when drawing your spectrum. Please label H’s on the structure (a,b,c, etc) and corresponding peaks : 10 9 8 7 6 5 4 3 2 1 0 (ppm) O O Cl
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Organic Chemistry 30B Winter 2006 EXAM 1, Page 2 __________________ Name II. SPECTROSCOPY 2. (15 points) A compound with molecular formula C 6 H 6 O 3 has the following IR spectrum. It shows two lines only in the 13 C-NMR spectrum, in the range of 110-150 ppm.
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  • Fall '05
  • Rubin
  • Organic chemistry, Nuclear magnetic resonance, Proton NMR, Organic Chemistry 30B

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